| Feature | X | Y | Map | AKA | Parish | County | Type | Feature Meaning |
| La Trinidad Valencera Wreck | 63 | 46 | 4 | Donegal | ||||
| Labadoo | 17 | 97 | 6 | Donegal | ||||
| Labbadish | 24 | 9 | 6 | Raymoghy | Donegal | T | ||
| Labbadoo | 18 | 97 | 12 | Convoy | Donegal | T | ||
| Labbincuggy | 12 | 87 | 12 | Donegal | ||||
| Labby | 75 | 92 | 13 | Ballynascreen | Derry | T | ||
| Labbyheige Bridge | 72 | 2 | 8 | Derry | ||||
| Labbynakeely | 22 | 76 | 12 | Tyrone | ||||
| Laburnum Lodge | 60 | 20 | 4 | Derry | ||||
| Laburum Lodge | 60 | 20 | 7 | Derry | ||||
| Lack | 27 | 66 | 18 | Fermanagh | ||||
| Lack Point | 10 | 52 | 5 | Farganlack Point | Antrim | |||
| Lack-na-traw | 18 | 43 | 5 | Antrim | ||||
| Lack, Lough | 22 | 73 | 12 | Tyrone | ||||
| Lackagh | 30 | 74 | 12 | Longfield West | Tyrone | T | ||
| Lackagh | 32 | 58 | 18 | Tyrone | ||||
| Lackagh | 45 | 57 | 18 | Donacavey | Tyrone | T | ||
| Lackagh | 47 | 6 | 7 | Cumber Lower | Derry | T | ||
| Lackagh | 61 | 18 | 7 | Derry | ||||
| Lackagh | 69 | 10 | 7 | Dungiven | Derry | T | ||
| Lackagh Bridge | 61 | 18 | 7 | Derry | ||||
| Lackagh Burn | 46 | 0 | 7 | Tyrone | ||||
| Lackaghboy Industrial Estate | 25 | 45 | 18 | Fermanagh | ||||
| Lackan Hill | 32 | 26 | 7 | Donegal | ||||
| Lackan Point | 32 | 26 | 7 | Donegal | ||||
| Lacknacoo | 4 | 18 | 6 | Gartan | Donegal | T | ||
| Ladle, The | 93 | 43 | 4 | Antrim | ||||
| Ladle, The | 93 | 43 | 5 | Antrim | ||||
| Lady Bay | 9 | 69 | 20 | Antrim | ||||
| Lady Cahan's Bridge | 73 | 26 | 8 | Derry | ||||
| Lady Hill | 16 | 91 | 14 | Antrim | Antrim | T | ||
| Lady O'Cahan's Bridge | 73 | 26 | 4 | Derry | ||||
| Lady's Bridge | 15 | 61 | 20 | Down | ||||
| Lady's Hill | 31 | 15 | 9 | Antrim | ||||
| Lady's Well | 98 | 2 | 8 | Antrim | ||||
| Ladybrook | 29 | 70 | 15 | Antrim | ||||
| Ladyhill Burn | 18 | 89 | 14 | Antrim | ||||
| Lagalumber Bridge | 27 | 67 | 18 | Fermanagh | ||||
| Lagan Meadows | 33 | 70 | 15 | Antrim | ||||
| Lagan River | 31 | 67 | 15 | Antrim | ||||
| Lagan Valley Regional Park | 30 | 67 | 15 | Antrim | ||||
| Lagan Valley Regional Park | 30 | 67 | 20 | Antrim | ||||
| Lagan View | 15 | 59 | 20 | Down | ||||
| Lagan View | 20 | 61 | 20 | Antrim | ||||
| Lagan, River | 19 | 60 | 20 | Down | ||||
| Lagan, River | 22 | 52 | 20 | Down | ||||
| Lagan, River | 31 | 67 | 20 | Antrim | ||||
| Lagandale | 24 | 50 | 20 | Down | ||||
| Lagangreen Bridge | 24 | 52 | 20 | Down | ||||
| Lagavadder | 43 | 98 | 12 | Leckpatrick | Tyrone | T | ||
| Lagavara | 4 | 42 | 5 | Ballintoy | Antrim | T | ||
| Lagavittal | 42 | 98 | 12 | Leckpatrick | Tyrone | T | ||
| Lagdavy | 80 | 13 | 8 | Derry | ||||
| Laghel | 24 | 82 | 12 | Tyrone | ||||
| Laghey | 83 | 60 | x | Killyman | Tyrone | T | ||
| Laghey Corner | 83 | 61 | 19 | Killyman | Tyrone | |||
| Laght | 37 | 75 | 12 | Longfield East | Tyrone | T | ||
| Laght Burn | 18 | 84 | 12 | Tyrone | ||||
| Laght Hill | 56 | 76 | 13 | Tyrone | ||||
| Laghta | 63 | 87 | 13 | Tyrone | ||||
| Laghtacahir | 21 | 83 | 12 | Tyrone | ||||
| Laghtcruppan | 17 | 83 | 12 | Tyrone | ||||
| Laghtfoggy | 17 | 84 | 12 | Termonamongan | Tyrone | T | ||
| Laghtmorris | 18 | 84 | 12 | Termonamongan | Tyrone | T | ||
| Laghtyowen Bridge | 65 | 70 | 13 | Tyrone | ||||
| Laghtyowen River | 66 | 68 | 19 | Tyrone | ||||
| Lagmore | 25 | 69 | 20 | Antrim | T | |||
| Lagmore | 26 | 69 | 15 | Derryaghy | Antrim | T | ||
| Lagnadavaugh | 39 | 22 | 7 | Donegal | ||||
| Lagnagalloglagh | 40 | 0 | 7 | Leckpatrick | Tyrone | T | ||
| Lagnagoppoge | 58 | 46 | 21 | Ballyculter | Down | T | ||
| Lagnamuck | 79 | 14 | 8 | Derry | ||||
| Lagoon | 57 | 76 | 15 | Down | ||||
| Lairakean | 75 | 47 | x | Aghanloo | Tyrone | T | ||
| Laird's Close | 23 | 40 | 20 | Down | ||||
| Lake House | 28 | 53 | 20 | Down | ||||
| Lake Mount | 35 | 59 | 18 | Tyrone | ||||
| Lake View | 11 | 76 | 14 | Antrim | ||||
| Lake View | 13 | 66 | 20 | Antrim | ||||
| Lake View | 14 | 50 | 20 | Down | ||||
| Lake View | 16 | 70 | 14 | Antrim | ||||
| Lake View | 17 | 45 | 20 | Down | ||||
| Lake View | 35 | 59 | 20 | Down | ||||
| Lake View | 37 | 56 | 20 | Down | ||||
| Lake View | 38 | 53 | 20 | Down | ||||
| Lake View | 71 | 52 | 19 | Tyrone | ||||
| Lake View | 78 | 61 | 19 | Tyrone | ||||
| Lake View | 93 | 4 | 8 | Derry | ||||
| Lake View | 95 | 94 | 14 | Derry | ||||
| Lake View House | 57 | 76 | 13 | Tyrone | ||||
| Lake View House | 77 | 61 | 19 | Tyrone | ||||
| Lake View House | 87 | 84 | 14 | Derry | ||||
| Lake View House | 93 | 84 | 14 | Derry | ||||
| Lake View House | 93 | 86 | 14 | Derry | ||||
| Lakeland Forum | 23 | 43 | 18 | Fermanagh | ||||
| Lakemount Lodge | 36 | 60 | 18 | Tyrone | ||||
| Lakeside | 94 | 81 | 14 | Derry | ||||
| Lakeview | 2 | 94 | 14 | Antrim | ||||
| Lakeview | 25 | 81 | 15 | Antrim | ||||
| Lakeview | 27 | 53 | 20 | Down | ||||
| Lakeview | 31 | 57 | 20 | Down | ||||
| Lakeview | 90 | 72 | 14 | Tyrone | ||||
| Lakeview | 91 | 44 | 19 | Armagh | ||||
| Lakeview House | 23 | 42 | 20 | Down | ||||
| Lakeview House | 89 | 81 | 14 | Derry | ||||
| Lakview | 8 | 55 | 20 | Down | ||||
| Lambed | 27 | 66 | 20 | Antrim | ||||
| Lambeg | 27 | 66 | 15 | Lambeg | Antrim | T | ||
| Lambfield | 80 | 63 | 19 | Drumglass | Tyrone | |||
| Lambs Island | 11 | 52 | 20 | Down | ||||
| Lambs Lough | 56 | 36 | 21 | Down | ||||
| Lammy | 43 | 71 | 12 | Drumragh | Tyrone | T | Place of elms | |
| Lammy | 78 | 70 | x | Desertcreat | Tyrone | T | ||
| Lammy House | 78 | 70 | 13 | Tyrone | ||||
| Lanaglug | 91 | 79 | 14 | Ballinderry | Tyrone | T | ||
| Landagivey | 90 | 21 | 4 | Agivey | Derry | T | ||
| Landagivey | 90 | 21 | 8 | Agivey | Derry | T | ||
| Landahussy | 51 | 90 | 13 | Bodoney Upper | Tyrone | |||
| Landahussy Lower | 50 | 90 | x | Bodoney Upper | Tyrone | T | ||
| Landahussy Upper | 51 | 90 | x | Bodoney Upper | Tyrone | T | ||
| Landhead | x | Ballymoney | Antrim | T | ||||
| Landing Stage | 60 | 86 | 15 | Down | ||||
| Landing Stages | 75 | 87 | 13 | Derry | ||||
| Landmore | 89 | 18 | x | Aghadowey | Derry | T | ||
| Landmore House | 89 | 18 | 8 | Derry | ||||
| Lane Head | 21 | 13 | x | Aghanunshin | Donegal | T | ||
| Langarve | x | Camlin | Antrim | T | ||||
| Langdale House | 47 | 96 | 9 | Antrim | ||||
| Langfield | 4 | 31 | 5 | Antrim | ||||
| Langford Lodge | 9 | 75 | 14 | Antrim | ||||
| Lankill | 21 | 40 | 18 | Fermanagh | ||||
| Lankill Lough | 21 | 41 | 18 | Fermanagh | ||||
| Lannimore Hill | 4 | 43 | 5 | Antrim | ||||
| Lappoges | 25 | 51 | 20 | Down | T | |||
| Laragh | 22 | 40 | 18 | Fermanagh | ||||
| Laragh | 38 | 85 | 12 | Ardstraw | Tyrone | T | ||
| Laragh | 52 | 66 | 18 | Dericriagh | Clogherny | Tyrone | T | Laragh Linchy |
| Laragh | 84 | 9 | 8 | Desertoghill | Derry | T | ||
| Laragh Bridge | 53 | 87 | 13 | Tyrone | ||||
| Laragh House | 23 | 50 | 18 | Fermanagh | ||||
| Laragh House | 38 | 84 | 12 | Tyrone | ||||
| Laraghaleas | x | Faughanvale | Derry | T | ||||
| Larandoy | 36 | 51 | 18 | Fermanagh | ||||
| Larch Hill | 42 | 3 | 7 | Tyrone | ||||
| Larch Hill | 42 | 72 | 15 | Down | ||||
| Larch Hill | 42 | 72 | 21 | Down | ||||
| Larch Vale | 15 | 72 | 14 | Antrim | ||||
| Larchfield | 1 | 26 | 5 | Antrim | ||||
| Larchfield | 1 | 26 | 8 | Antrim | ||||
| Larchfield | 9 | 12 | 8 | Antrim | ||||
| Larchfield | 30 | 58 | 20 | Down | ||||
| Larchgrove | 11 | 13 | 9 | Antrim | ||||
| Larchmount | 29 | 59 | 20 | Down | ||||
| Larchmount | 33 | 94 | 12 | Tyrone | ||||
| Larchmount | 80 | 59 | 19 | Tyrone | ||||
| Largantea | 73 | 28 | x | Aghanloo | Derry | T | ||
| Largantea Bridge | 73 | 28 | 4 | Aghanloo | Derry | |||
| Largantea Bridge | 73 | 28 | 8 | Aghanloo | Derry | |||
| Largantogher | x | Maghera | Derry | T | ||||
| Larghaleas | 51 | 20 | 7 | Derry | ||||
| Largnalarkan | 97 | 4 | 6 | Donegal | ||||
| Largnalore | 9 | 0 | 6 | Kilteevoge | Donegal | T | ||
| Largy | 27 | 65 | 18 | Fermanagh | ||||
| Largy | 29 | 47 | 18 | Fermanagh | ||||
| Largy | 67 | 19 | 7 | Carrick | Derry | T | ||
| Largy | 11 | 76 | x | Killead | Antrim | T | ||
| Largy Bog | 98 | 0 | 8 | Antrim | ||||
| Largy Bridge | 68 | 20 | 4 | Derry | ||||
| Largy Bridge | 68 | 20 | 7 | Derry | ||||
| Largy Burn | 0 | 99 | 14 | Antrim | ||||
| Largy Cottages | 12 | 76 | 14 | Killead | Antrim | |||
| Largy House | 11 | 76 | 14 | Killead | Antrim | |||
| Largy Lough | 29 | 46 | 18 | Fermanagh | ||||
| Largy Road | 29 | 19 | 9 | Antrim | ||||
| Largybeg | 35 | 84 | x | Ardstraw | Tyrone | T | ||
| Largybeg Wood | 35 | 84 | 12 | Ardstraw | Tyrone | |||
| Largymore | 28 | 62 | 20 | Antrim | T | |||
| Largyreagh | 71 | 24 | 4 | Drumachose | Derry | T | ||
| Largyreagh | 71 | 24 | 8 | Drumachose | Derry | T | ||
| Lark Hill | 17 | 74 | 14 | Antrim | ||||
| Lark Hill | 17 | 84 | 14 | Antrim | ||||
| Lark, Lough | 64 | 92 | 13 | Tyrone | ||||
| Larkfield | 18 | 66 | 20 | Antrim | ||||
| Larkfield | 32 | 92 | 12 | Tyrone | ||||
| Larne | 40 | 3 | 9 | Antrim | ||||
| Larne Harbour | 41 | 2 | 9 | Antrim | ||||
| Larne Lough | 43 | 99 | 9 | Antrim | ||||
| Larry Bane Bay | 5 | 45 | 5 | Antrim | ||||
| Larry Bane Head | 5 | 45 | 5 | Antrim | ||||
| Larrycormick | 85 | 85 | x | Desertlyn | Derry | T | ||
| Larrycormick Hill | 85 | 85 | 14 | Desertlyn | Derry | |||
| Larybeg Bridge | 35 | 83 | 12 | Tyrone | ||||
| Latbeg | 53 | 56 | 18 | Clogher | Tyrone | T | ||
| Latmacollum | 88 | 40 | 19 | Armagh | ||||
| Lattery | 97 | 41 | 19 | Armagh | ||||
| Launches Little | 54 | 50 | 21 | Down | ||||
| Launches Long | 53 | 50 | 21 | Down | ||||
| Laurehill | 2 | 95 | 14 | Antrim | ||||
| Laurel Hill | 14 | 65 | 20 | Antrim | ||||
| Laurel Hill | 28 | 58 | 20 | Down | ||||
| Laurel Hill | 30 | 62 | 20 | Antrim | ||||
| Laurel Hill | 32 | 54 | 20 | Down | ||||
| Laurel Hill | 37 | 59 | 20 | Down | ||||
| Laurel Hill | 42 | 59 | 21 | Down | ||||
| Laurel Hill | 91 | 53 | 19 | Armagh | ||||
| Laurel House | 35 | 60 | 20 | Down | ||||
| Laurel Lodge | 13 | 52 | 20 | Down | ||||
| Laurel Lodge | 33 | 52 | 20 | Down | ||||
| Laurel Place | 47 | 96 | 9 | Antrim | ||||
| Laureldene | 75 | 63 | 19 | Tyrone | ||||
| Laurels, The | 29 | 61 | 20 | Down | ||||
| Laurels, The | 88 | 72 | 14 | Tyrone | ||||
| Laurels', The | 0 | 56 | 20 | Armagh | ||||
| Laurelvale | 0 | 47 | 20 | Armagh | ||||
| Laurelvale | 20 | 84 | 14 | Antrim | ||||
| Lavary's Hill | 10 | 66 | 20 | Antrim | ||||
| Lavery's Hill | 93 | 85 | 14 | Derry | ||||
| Lavin Hill | 5 | 24 | 8 | Loughguile | Antrim | |||
| Lavin Lower | 6 | 22 | 8 | Loughguile | Antrim | T | ||
| Lavin Upper | 5 | 23 | 8 | Loughguile | Antrim | |||
| Lawnakilla | 23 | 46 | 18 | Fermanagh | ||||
| Lawrencetown | 9 | 49 | 20 | Down | ||||
| Layd | 24 | 29 | 5 | Antrim | ||||
| Layd Church | 24 | 29 | 5 | Antrim | ||||
| Lead Mines, The | 48 | 76 | 15 | Down | ||||
| Leaghan | 20 | 62 | 18 | Fermanagh | ||||
| Leaghan | 60 | 80 | 13 | Bodoney Lower | Tyrone | T | ||
| Leaghany | 6 | 79 | 12 | Tyrone | ||||
| Leaghany River | 7 | 78 | 12 | Tyrone | ||||
| Leaghs | 68 | 92 | 13 | Bodoney Upper | Tyrone | T | ||
| Leaghs Bridge | 69 | 93 | 13 | Tyrone | ||||
| Leaght | 22 | 96 | 6 | Donaghmore | Donegal | T | ||
| Leaght | 22 | 96 | 12 | Donaghmore | Donegal | T | ||
| Leahanbeg | 1 | 15 | 6 | Donegal | ||||
| Leahanmore | 1 | 16 | 6 | Donegal | ||||
| Lealies | 36 | 1 | 9 | Kilwaughter | Antrim | T | ||
| Leam | 38 | 48 | 18 | Fermanagh | ||||
| Leannan River | 7 | 16 | 6 | Donegal | ||||
| Leannan River | 11 | 17 | 6 | Donegal | ||||
| Leannan River | 15 | 21 | 6 | Donegal | ||||
| Leannan River | 20 | 20 | 6 | Donegal | ||||
| Leansmount | 8 | 62 | 20 | Down | ||||
| Leany | 70 | 57 | x | Carnteel | Tyrone | T | ||
| Leanyhenery Burn | 76 | 1 | 8 | Derry | ||||
| Leanymore | 21 | 85 | 12 | Tyrone | ||||
| Leap, The | 6 | 86 | 12 | Donegal | ||||
| Leap, The | 13 | 72 | 14 | Antrim | ||||
| Leap, The | 49 | 69 | 18 | Tyrone | ||||
| Leap, The | 94 | 12 | 8 | Antrim | ||||
| Lear | Learmount | Derry | T | |||||
| Learden | 81 | 28 | 8 | Moscosquin | Derry | T | ||
| Learden Lower | 46 | 88 | x | Bodoney Upper | Tyrone | T | ||
| Learden Upper | 47 | 88 | 13 | Bodoney Upper | Tyrone | T | ||
| Learmore | 25 | 81 | x | Urney | Tyrone | T | ||
| Learmore Hill | 25 | 81 | 12 | Urney | Tyrone | |||
| Learmount Castle | 58 | 2 | 7 | Derry | ||||
| Learmount Mountain | 58 | 98 | 13 | Derry | ||||
| Learmount Wood | 57 | 2 | 7 | Derry | ||||
| Leat | 43 | 2 | 7 | Donaghedy | Tyrone | T | ||
| Leathemstown | 21 | 73 | 14 | Antrim | ||||
| Leathemstown Reservoir | 21 | 72 | 14 | Antrim | ||||
| Leatrin Hill | 7 | 14 | 6 | Donegal | ||||
| Leawin Burn | 46 | 96 | 13 | Tyrone | ||||
| Lebally | 32 | 40 | 18 | Aghalurcher | Fermanagh | T | ||
| LECALE | 52 | 42 | 21 | Down | ||||
| Lecale Way | 56 | 49 | 21 | Down | ||||
| Leck | 81 | 24 | 4 | Drumachose, Mascosquin | Derry | T | ||
| Leck | 81 | 24 | 8 | Drumachose, Mascosquin | Derry | T | ||
| Leck | 86 | 74 | x | Ballyclog | Tyrone | T | ||
| Leck | 97 | 21 | 4 | Ballymoney | Antrim | T | ||
| Leck | 97 | 21 | 8 | Ballymoney | Antrim | T | ||
| Leck Bridge | 64 | 68 | 19 | Tyrone | ||||
| Leck House | 86 | 74 | 14 | Tyrone | ||||
| Leckagh | 90 | 88 | x | Magherafelt | Derry | |||
| Leckagh House | 90 | 88 | 14 | Magherafelt | Derry | |||
| Leckan Hill | 22 | 97 | 6 | Donegal | ||||
| Leckan Hill | 22 | 97 | 12 | Donegal | ||||
| Leckboy | 92 | 42 | 4 | Antrim | ||||
| Leckboy | 92 | 42 | 5 | Antrim | ||||
| Leckilroy Cove | 93 | 44 | 4 | Antrim | ||||
| Leckilroy Cove | 93 | 44 | 5 | Antrim | ||||
| Leckin | 58 | 87 | 13 | Bodoney Lower | Tyrone | T | ||
| Leckpatrick | 23 | 39 | 5 | Antrim | ||||
| Leckpatrick | 36 | 2 | 7 | Leckpatricke | Leckpatrick | Tyrone | T | |
| Lecumpher | 85 | 89 | 14 | Desertmartin | Derry | T | ||
| Lederg | 82 | 62 | x | Killyman | Tyrone | T | ||
| Lee, Lough | 25 | 76 | 12 | Tyrone | ||||
| Leek | 72 | 43 | 19 | Monaghan | ||||
| Leeke | 67 | 15 | 7 | Bovevagh | Derry | T | ||
| Leeke | 90 | 39 | 4 | Dunluce | Antrim | T | ||
| Leeke | 90 | 39 | 5 | Dunluce | Antrim | T | ||
| Leeke Bridge | 67 | 15 | 7 | Derry | ||||
| Leeke Bridge | 90 | 40 | 4 | Antrim | ||||
| Leeke Bridge | 90 | 40 | 5 | Antrim | ||||
| Leeke Water | 66 | 15 | 7 | Derry | ||||
| Leeperstown | 9 | 96 | 12 | Donegal | ||||
| Lees, The | 26 | 56 | 18 | Tyrone | ||||
| Lees, The | 45 | 78 | 13 | Cappagh | Tyrone | |||
| Legacapple Burn | 17 | 33 | 5 | Antrim | ||||
| Legacarn | 33 | 11 | 9 | Antrim | ||||
| Legacurry | 3 | 25 | 5 | Kilraghts | Antrim | T | ||
| Legacurry | 3 | 25 | 8 | Kilraghts | Antrim | T | ||
| Legacurry | 40 | 82 | 12 | Cappagh | Tyrone | T | ||
| Legacurry | 50 | 63 | 18 | Legacorie | Clogherny | Tyrone | T | Hollow of the Morass? |
| Legacurry | 59 | 17 | 7 | Derry | ||||
| Legacurry | 78 | 72 | x | Desertcreat | Tyrone | T | ||
| Legacurry Bridge | 29 | 60 | 20 | Down | ||||
| Legaghory | 49 | 9 | 7 | Cumber Lower | Derry | T | ||
| Legagrane | 16 | 19 | 9 | Dunaghy | Antrim | T | ||
| Legagrane | x | Dunaghy | Antrim | T | ||||
| Legagrane Bridge | 16 | 17 | 9 | Antrim | ||||
| Legagrane Burn | 15 | 18 | 9 | Antrim | ||||
| Legahapple Bridge | 6 | 31 | 5 | Antrim | ||||
| Legalaw | 82 | 30 | 4 | Derry | ||||
| Legalougha Bridge | 44 | 97 | 12 | Tyrone | ||||
| Legaloy | 31 | 92 | 15 | Ballynure | Antrim | T | ||
| Legamaddy | 48 | 39 | 21 | Bright | Down | T | ||
| Legamaddy House | 48 | 39 | 21 | Down | ||||
| Legamaghery | 45 | 55 | 18 | Donacavey | Tyrone | T | ||
| Legananam Pot | 75 | 12 | 8 | Derry | ||||
| Legananny | 29 | 43 | 20 | Down | T | |||
| Legananny Dolmen Chanbered Grave | 29 | 43 | 20 | Down | ||||
| Legananny Moss | 8 | 42 | 20 | Down | ||||
| Legananny Mountain | 29 | 44 | 20 | Cratlieve | Down | |||
| Legane | 72 | 54 | x | Aghanloo | Tyrone | T | ||
| Legane Lough | 73 | 53 | 19 | Aghanloo | Tyrone | |||
| Leganimma | 7 | 3 | 6 | Donegal | ||||
| Leganvy | 34 | 74 | 12 | Longfield East | Tyrone | T | ||
| Legaroe | 63 | 60 | x | Carnteel | Tyrone | T | ||
| Legatiggle | 41 | 61 | 18 | Donacavey | Tyrone | T | ||
| Legatirriff | 15 | 69 | 20 | Antrim | T | |||
| Legatonegan | 20 | 83 | 12 | Termonamongan | Tyrone | T | ||
| Legavaddy | 30 | 90 | 12 | Tyrone | ||||
| Legavady | 49 | 0 | 7 | Tyrone | ||||
| Legavannon | 58 | 15 | 7 | Faughanvale | Derry | T | ||
| Legavannon Pot | 75 | 15 | 8 | Derry | ||||
| Legclogfin | 60 | 94 | 13 | Bodoney Upper | Tyrone | T | ||
| Legg | 62 | 39 | 4 | Donegal | ||||
| Leggandorragh | 31 | 97 | x | Clonleigh | Donegal | T | ||
| Leggarve | 70 | 2 | 8 | Derry | ||||
| Leggycurry Bridge | 42 | 52 | 21 | Down | ||||
| Leggygowan | 42 | 57 | 21 | Saintfield | Down | T | ||
| Leghan, Lower | 60 | 80 | 13 | Tyrone | ||||
| Legilly | 76 | 59 | x | Clonfeacle | Tyrone | T | ||
| Legilly Wood | 76 | 59 | 19 | Clonfeacle | Tyrone | |||
| Legland | 14 | 3 | 6 | Convoy | Donegal | T | ||
| Legland | 36 | 80 | x | Ardstraw | Tyrone | T | ||
| Legmore | 13 | 61 | 20 | Down | T | |||
| Legmore | 75 | 99 | 13 | Derry | ||||
| Legmurn | 87 | 71 | 14 | Ballyclog | Tyrone | T | ||
| Legnabraid | 27 | 96 | 6 | Cunninghamstown | Clonleigh | Donegal | T | |
| Legnabraid | 27 | 96 | 12 | Cunninghamstown | Clonleigh | Donegal | T | |
| Legnabraid | 44 | 84 | 12 | Ardstraw | Tyrone | T | ||
| Legnacash | 75 | 77 | x | Kildress | Tyrone | T | ||
| Legnaduff | 37 | 13 | 7 | Killea | Donegal | T | ||
| Legnagappoge | 54 | 96 | 13 | Donaghedy | Tyrone | T | ||
| Legnagooly Bridge | 13 | 12 | 9 | Antrim | ||||
| Legnagooly Burn | 13 | 12 | 9 | Antrim | ||||
| Legnahoory | 12 | 17 | 6 | Kilmacrenan | Donegal | T | ||
| Legnaneale | 30 | 97 | x | Clonleigh | Donegal | T | ||
| Legnarainy | 54 | 98 | 13 | Tyrone | ||||
| Legnashammer | 60 | 74 | 13 | Tyrone | ||||
| Legnatraw | 31 | 7 | 6 | Taughboyne | Donegal | T | ||
| Legnatraw | 31 | 7 | 7 | Taughboyne | Donegal | T | ||
| Legnavadder Burn | 43 | 97 | 12 | Tyrone | ||||
| Legoniel | 29 | 77 | 15 | Shankill | Antrim | T | ||
| Legphressy | 33 | 70 | 12 | Longfield East | Tyrone | T | ||
| Legvin | 12 | 77 | 12 | Tyrone | ||||
| Lehill | 24 | 40 | 18 | Fermanagh | ||||
| Leiganfield | 32 | 85 | 15 | Antrim | ||||
| Leitrim | 0 | 28 | 5 | Ballymoney | Antrim | T | ||
| Leitrim | 0 | 28 | 8 | Ballymoney | Antrim | T | ||
| Leitrim | 21 | 80 | x | Termonamongan | Tyrone | T | ||
| Leitrim | 30 | 40 | 20 | Down | T | |||
| Leitrim | 35 | 15 | 6 | All Saints | Donegal | T | ||
| Leitrim | 35 | 15 | 7 | Donegal | ||||
| Leitrim | 46 | 4 | x | Donaghedy | Tyrone | T | ||
| Leitrim | 95 | 93 | 14 | Ballyscullion | Derry | T | ||
| Leitrim Hill | 21 | 80 | 12 | Termonamongan | Tyrone | |||
| Leitrim Hill | 46 | 4 | 7 | Tyrone | ||||
| Lemnagh Beg | 2 | 43 | 5 | Ballintoy | Antrim | T | ||
| Lemnagh More | 1 | 42 | 5 | Ballintoy | Antrim | |||
| Lemnagore Wood | 75 | 43 | 19 | Armagh | ||||
| Lemnalary | 28 | 19 | 9 | Ardclinis | Antrim | T | ||
| Lemnalary Mountain | 24 | 19 | 9 | Ardclinis | Antrim | T | ||
| Lemnaroy | x | Termoneeny | Derry | T | ||||
| Lenaderg | 11 | 49 | 20 | Down | T | |||
| Lenadremnagh | 89 | 69 | 19 | Clonloe | Tyrone | T | ||
| Lenagh | 11 | 91 | 14 | Drummaul | Antrim | T | ||
| Lenagh | 53 | 82 | 13 | Bodoney Lower | Tyrone | T | ||
| Lenagh | 67 | 45 | 19 | Monaghan | ||||
| Lenagh Bridge | 54 | 81 | 13 | Tyrone | ||||
| Lenaghan | 20 | 44 | 18 | Fermanagh | ||||
| Lenaghan House | 20 | 45 | 18 | Fermanagh | ||||
| Lenalea | 9 | 5 | 6 | Conwal | Donegal | T | ||
| Lenalea | 91 | 43 | 19 | Armagh | ||||
| Lenamore | 50 | 84 | 13 | Bodoney Lower | Tyrone | T | ||
| Lenamore | 66 | 33 | 4 | Magilligan (Tamlaghtard) | Derry | T | ||
| Lenamore | 74 | 12 | 8 | Dungiven | Derry | T | ||
| Lenamore Far | 44 | 23 | 7 | Donegal | ||||
| Lenamore Middle | 44 | 22 | 7 | Donegal | ||||
| Lenamore Near | 43 | 22 | 7 | Donegal | ||||
| Lendrum's Bridge | 43 | 54 | 18 | Tyrone | ||||
| Lennox Lodge | 62 | 62 | 19 | Tyrone | ||||
| Lennymore | 12 | 75 | 14 | Antrim | ||||
| Lennymore Bay | 11 | 74 | 14 | Antrim | ||||
| Leper's Point | 50 | 28 | 7 | Rinenore | Donegal | |||
| Lerwin Bridge | 43 | 92 | 12 | Tyrone | ||||
| Lesiure Centre | 29 | 91 | 15 | Antrim | ||||
| Leslie Hill | 93 | 25 | 4 | Antrim | ||||
| Leslie Hill | 93 | 25 | 5 | Antrim | ||||
| Leslie Hill | 93 | 25 | 8 | Antrim | ||||
| Lessans | 39 | 61 | 20 | Down | ||||
| Lessans | 40 | 61 | x | Saintfield | Down | T | ||
| Letfern | 49 | 62 | 18 | Laghtfarney | Clogherny | Tyrone | T | Sepulcher of alder trees |
| Letfren Bridge | 48 | 62 | 18 | Tyrone | ||||
| Letrim Hill | 91 | 13 | 8 | Derry | ||||
| Lettan | 35 | 46 | 18 | Fermanagh | ||||
| Letter | 15 | 20 | 6 | Kilmacrenan | Donegal | T | ||
| Letter | 36 | 26 | x | Fahan Upper | Donegal | T | ||
| Letteran | 80 | 87 | 13 | Lissan | Derry | T | ||
| Letterbailey | 36 | 52 | 18 | Fermanagh | ||||
| Letterbin | 34 | 82 | 12 | Ardstraw | Tyrone | T | ||
| Letterbin Wood | 34 | 82 | 12 | Tyrone | ||||
| Letterboy | 20 | 64 | 18 | Tyrone | ||||
| Letterbrat | 47 | 91 | 13 | Bodoney Upper | Tyrone | T | ||
| Letterbrat Bridge | 47 | 91 | 13 | Tyrone | ||||
| Letterbrat Burn | 47 | 93 | 13 | Tyrone | ||||
| Letterbrick | 0 | 2 | 6 | Kilteevoge | Donegal | T | ||
| Lettercarn | 25 | 76 | 12 | Ardstraw | Tyrone | T | ||
| Lettercleary | 87 | 70 | 14 | Donaghenry | Tyrone | T | ||
| Lettercran | 17 | 73 | x | Templecarn | Donegal | T | ||
| Lettercran Hill | 17 | 73 | 12 | Templecarn | Donegal | |||
| Letterfad | 12 | 21 | 6 | Kilmacrenan | Donegal | T | ||
| Lettergash | 29 | 62 | 18 | Dromore | Tyrone | T | ||
| Lettergull | 30 | 5 | 6 | Taughboyne | Donegal | T | ||
| Lettergull | 30 | 5 | 7 | Taughboyne | Donegal | T | ||
| Letterkenny | 17 | 12 | 6 | Conwal | Donegal | T | ||
| Letterkillew | 1 | 94 | 6 | Donegal | ||||
| Letterleague | 14 | 7 | 6 | Conwal | Donegal | T | ||
| Letterloan | 80 | 25 | 4 | Mascosquin | Derry | T | ||
| Letterloan | 80 | 25 | 8 | Mascosquin | Derry | T | ||
| Letterlogher | 58 | 7 | 7 | Cumber Upper | Derry | T | ||
| Lettermakenny | 13 | 97 | 12 | Donegal | ||||
| Lettermakenny | 14 | 98 | 6 | Donegal | ||||
| Lettermire | 53 | 9 | x | Cumber Lower | Derry | T | ||
| Lettermire Hill | 53 | 9 | 7 | Cumber Lower | Derry | |||
| Lettermoney House | 24 | 54 | 18 | Fermanagh | ||||
| Lettermore | 14 | 1 | 6 | Convoy | Donegal | T | ||
| Lettermuck | 52 | 5 | 7 | Cumber Upper | Derry | T | ||
| Lettermuck Bridge | 51 | 6 | 7 | Cumber Upper | Derry | |||
| Lettershanbo | 6 | 0 | 6 | Kilteevoge | Donegal | T | ||
| Lettershanbo | 11 | 4 | 6 | Convoy | Donegal | T | ||
| Lettershendoney Town | 50 | 15 | 7 | Cumber Lower | Derry | |||
| Lettershendony | 50 | 14 | 7 | Cumber Lower | Derry | T | ||
| Lettery | 29 | 65 | 18 | Dromore | Tyrone | T | ||
| Lettery | 61 | 57 | x | Errigal Keerogue | Tyrone | T | ||
| Levallyreagh | 27 | 48 | 20 | Down | T | |||
| Leven, The | 51 | 13 | 7 | Derry | ||||
| Leveracaw | 46 | 85 | 13 | Tyrone | ||||
| Leveroge | 33 | 65 | 15 | Drumbo | Down | T | ||
| Leveroge | 33 | 65 | 20 | Down | T | |||
| Lewin Bridge | 10 | 24 | 9 | Antrim | ||||
| Lewin Burn | 10 | 24 | Antrim | |||||
| Ley Hill | 0 | 90 | 14 | Antrim | ||||
| Leymore | 9 | 6 | 8 | Ahoghill | Antrim | T | ||
| Libbert | 31 | 14 | 9 | Tickmacrevan | Antrim | T | ||
| Liberly Burn | 38 | 15 | 7 | Derry | ||||
| Liberty Bridge | 46 | 24 | 7 | Donegal | ||||
| Liberty Bridge | 48 | 13 | 7 | Derry | ||||
| Liberty Hill | 41 | 61 | 21 | Down | ||||
| Library | 43 | 16 | 7 | Derry | ||||
| Lieutenant Hill | 46 | 75 | 15 | Down | ||||
| Lifeboat House | 24 | 26 | 5 | Antrim | ||||
| Liffock | 76 | 35 | 4 | Dunboe | Derry | T | ||
| Liffock Cross Roads | 77 | 34 | 4 | Dunboe | Derry | |||
| Lifford | 36 | 55 | 18 | Kilskeery | Tyrone | T | ||
| Lifford (& Beg & Common) | 32 | 98 | 12 | Clonleigh | Donegal | T | ||
| Lifford (& Beg & Common) | 33 | 98 | 6 | Clonleigh | Donegal | T | ||
| Lifford Bridge | 33 | 98 | 6 | Donegal | ||||
| Ligadaughtan | 25 | 35 | 5 | Culfeightrin | Antrim | T | ||
| Ligatraght | 62 | 87 | 13 | Bodoney Lower | Tyrone | T | ||
| Ligfordrum | 41 | 93 | 12 | Douglas | Ardstraw | Tyrone | T | |
| Ligfordrum Bridge | 41 | 93 | 12 | Tyrone | ||||
| Ligfordrum Wood | 40 | 92 | 12 | Tyrone | ||||
| Ligg | 31 | 5 | 9 | Antrim | ||||
| Ligg | 49 | 17 | 7 | Faughanvale | Derry | T | ||
| Liggartown | 34 | 92 | 12 | Urney | Tyrone | T | ||
| Ligger Bridge | 18 | 73 | 14 | Antrim | ||||
| Liggins | 61 | 88 | 13 | Bodoney Lower | Tyrone | T | ||
| Light House Island | 59 | 85 | 15 | Bangor | Down | T | ||
| Lighthouse, East | 16 | 52 | 5 | Antrim | ||||
| Lighthouse, South | 15 | 47 | 5 | Antrim | ||||
| Lighthouse, West | 9 | 51 | 5 | Antrim | ||||
| Lignaballogy | 58 | 39 | 21 | Down | ||||
| Lignabroghan | 36 | 86 | 15 | Antrim | ||||
| Lignagh Bridge | 20 | 9 | 9 | Antrim | ||||
| Lignakirk | 57 | 38 | 21 | Down | ||||
| Lile | 93 | 3 | 8 | Derry | ||||
| Lilly, Lough | 5 | 93 | 12 | Donegal | ||||
| Lily, Lough | 67 | 73 | 13 | Tyrone | ||||
| Limavady | 67 | 22 | 4 | Drumachose | Derry | |||
| Limavady | 68 | 22 | 7 | Drumachose | Derry | |||
| Limavallaghan | x | Dunaghy | Antrim | T | ||||
| Lime Hill | 68 | 74 | 13 | Desertcreat | Tyrone | T | ||
| Lime Park | 74 | 45 | 19 | Tyrone | ||||
| Lime Park | 81 | 74 | 13 | Tyrone | ||||
| Lime Works | 19 | 64 | 20 | Antrim | ||||
| Limepark | 6 | 31 | 5 | Antrim | ||||
| Limerick Point | 24 | 27 | 5 | Antrim | ||||
| Limestone Lough | 7 | 79 | 12 | Loughahult | Tyrone | |||
| Limestone Pladdies | 54 | 54 | 21 | Down | ||||
| Limestone Rock | 55 | 55 | 21 | Down | ||||
| Liminary | 13 | 0 | 9 | Ballyclug | Antrim | T | ||
| Liminary Bridge | 13 | 99 | 14 | Antrim | ||||
| Liminary Bridge | 13 | 99 | 9 | Antrim | ||||
| Limnagh | 38 | 73 | 12 | Tyrone | ||||
| Limnaharry | 2 | 1 | 8 | Ahoghill | Antrim | T | ||
| Lin-coo | 29 | 84 | 15 | Antrim | ||||
| Lindsays Corner | 27 | 88 | 15 | Antrim | ||||
| Linen Hill House | 86 | 42 | 19 | Armagh | ||||
| Linford | 26 | 82 | 15 | Antrim | ||||
| Linford | 32 | 6 | 9 | Carncastle | Antrim | T | ||
| Linford Bridge | 32 | 7 | 9 | Antrim | ||||
| Linford Water | 31 | 7 | 9 | Antrim | ||||
| Ling | 54 | 3 | 7 | Cumber Upper | Derry | T | ||
| Ling Bridge | 54 | 4 | 7 | Cumber Upper | Derry | |||
| Linn Bridge | 37 | 4 | 9 | Antrim | ||||
| Linnstown | 16 | 7 | 9 | Antrim | ||||
| Linnyglass | 87 | 72 | 14 | Ballyclog | Tyrone | T | ||
| Lisachrin, Upper | 86 | 11 | 8 | Desertoghill | Derry | T | ||
| Lisaclare | 87 | 68 | 19 | Clonloe | Tyrone | T | ||
| Lisacoppin | 49 | 70 | x | Lisahoppin | Cappagh | Tyrone | T | |
| Lisadavil | 67 | 52 | x | Carnteel | Tyrone | T | ||
| Lisadian | 21 | 59 | 20 | Down | T | |||
| Lisadian | 84 | 46 | 19 | Armagh | ||||
| Lisadian House | 22 | 59 | 20 | Down | ||||
| Lisaghmore | 44 | 14 | 7 | Tench, The | Clondermot | Derry | T | |
| Lisahally Port | 47 | 21 | 7 | Derry | ||||
| Lisahoppin | 49 | 70 | x | Lisacoppin | Cappagh | Tyrone | T | |
| Lisahoppin House | 49 | 70 | 13 | Tyrone | ||||
| Lisalbanagh | 86 | 88 | 14 | Desertlyn | Derry | T | ||
| Lisamintry Rath | 4 | 54 | 20 | Armagh | ||||
| Lisan Water | 78 | 83 | 13 | Tyrone | ||||
| Lisanees (Upper & Lower) | 20 | 15 | 6 | Aghanunshin | Donegal | T | ||
| Lisanelly | 44 | 73 | x | Cappagh | Tyrone | T | ||
| Lisanoure Castle | 6 | 24 | 8 | Antrim | ||||
| Lisard Rath | 63 | 6 | 7 | Derry | ||||
| Lisavaddy | 44 | 59 | 18 | Donacavey | Tyrone | T | ||
| Lisavague | 99 | 48 | 19 | Armagh | ||||
| Lisbancarney | 80 | 54 | x | Clonfeacle | Tyrone | T | ||
| Lisbane | 3 | 44 | 20 | Armagh | T | |||
| Lisbane | 37 | 58 | 20 | Down | T | |||
| Lisbane | 48 | 64 | 21 | Down | ||||
| Lisbane | 49 | 65 | x | Down | T | |||
| Lisbane | 49 | 78 | x | Down | T | |||
| Lisbane | 50 | 47 | 21 | Saul | Down | T | ||
| Lisbane | 56 | 50 | 18 | Clogher | Tyrone | T | ||
| Lisbane | 60 | 57 | 21 | Ardkeen | Down | T | ||
| Lisbane | 82 | 47 | 19 | Armagh | ||||
| Lisbane House | 60 | 58 | 21 | Down | ||||
| Lisbane Lough | 37 | 58 | 20 | Down | ||||
| Lisbanlemneigh | x | Clonfeacle | Tyrone | T | ||||
| Lisbanoe | 85 | 41 | 19 | Armagh | ||||
| Lisbarnet | 47 | 65 | 15 | Kilmood | Down | T | ||
| Lisbarnet | 47 | 65 | 21 | Kilmood | Down | T | ||
| Lisbeg | 62 | 56 | x | Carnteel | Tyrone | T | ||
| Lisbeg House | 62 | 56 | 19 | Carteel | Tyrone | |||
| Lisbellanagroagh Beg | 99 | 42 | 4 | Ballintoy | Antrim | T | ||
| Lisbellanagroagh Beg | 99 | 42 | 5 | Ballintoy | Antrim | T | ||
| Lisbellanagroagh More | 99 | 42 | 4 | Ballintoy | Antrim | |||
| Lisbellanagroagh More | 99 | 42 | 5 | Ballintoy | Antrim | |||
| Lisbofin | 84 | 52 | 19 | Blackwatertown | Clonfeacle | Armagh | T | |
| Lisboy | 50 | 70 | x | Lisnaby | Cappagh | Tyrone | T | |
| Lisboy | 51 | 48 | 21 | Saul | Down | T | ||
| Lisboy | 51 | 51 | 18 | Clogher | Tyrone | T | ||
| Lisboy | 67 | 40 | 19 | Monaghan | ||||
| Lisboy | 78 | 67 | x | Donaghmore | Tyrone | T | ||
| Lisboy | 84 | 19 | 8 | Aghadowey | Derry | T | ||
| Lisboy | 84 | 75 | x | Artrea | Tyrone | T | ||
| Lisboy | x | Kilraghts | Antrim | T | ||||
| Lisboy House | 50 | 70 | 13 | Tyrone | ||||
| Lisbreen | 14 | 12 | 9 | Skerry | Antrim | T | ||
| Lisbunny | 51 | 3 | 7 | Cumber Upper | Derry | T | ||
| Lisburn | 26 | 63 | 20 | Antrim | ||||
| Lisburn Lodge | 30 | 59 | 20 | Down | ||||
| Liscabble | 44 | 85 | 12 | Bodoney Lower | Tyrone | T | ||
| Liscabble Mountain | 44 | 85 | 12 | Tyrone | ||||
| Liscall | 81 | 16 | 8 | Errigal | Derry | T | ||
| Liscall Bridge | 81 | 16 | 8 | Errigal | Derry | |||
| Liscausy | 86 | 74 | x | Artrea | Tyrone | T | ||
| Lisclamerty | 23 | 7 | 6 | Raymoghy | Donegal | T | ||
| Liscloon | 47 | 3 | 7 | Tyrone | ||||
| Liscloon Bridge | 47 | 3 | 7 | Tyrone | ||||
| Liscloon Lower | 47 | 4 | 7 | Donaghedy | Tyrone | T | ||
| Liscloon Upper | 48 | 3 | 7 | Donaghedy | Tyrone | T | ||
| Liscolman | 98 | 36 | 4 | Billy | Antrim | T | ||
| Liscolman | 98 | 36 | 5 | Billy | Antrim | T | ||
| Lisconduff | 70 | 53 | x | Carnteel | Tyrone | T | ||
| Lisconnan | 95 | 31 | 4 | Derrykeighan | Antrim | T | ||
| Lisconnan | 95 | 31 | 5 | Derrykeighan | Antrim | T | ||
| Lisconrea | 39 | 57 | x | Donacavey | Tyrone | T | ||
| Liscooly | 22 | 94 | 6 | Donaghmore | Donegal | T | ||
| Liscooly Bridge | 23 | 94 | 6 | Donaghmore | Donegal | |||
| Liscooly Bridge | 23 | 94 | 12 | Donaghmore | Donegal | |||
| Liscorran | 8 | 60 | 20 | Armagh | T | |||
| Liscreevaghan | 34 | 89 | x | Clady Sproul | Ardstraw | Tyrone | T | |
| Liscreevaghan Lodge | 35 | 89 | 12 | Tyrone | ||||
| Liscreevan Lough | 20 | 57 | 18 | Fermanagh | ||||
| Liscurry | 38 | 1 | 7 | Leckpatrick | Tyrone | T | ||
| Lisdaigan | 39 | 59 | 20 | Down | T | |||
| Lisdalgan | 40 | 59 | x | Saintfield | Down | T | ||
| Lisdergan | 44 | 59 | x | Donacavey | Tyrone | T | ||
| Lisdermot | 80 | 58 | x | Clonfeacle | Tyrone | T | ||
| Lisdhu | 81 | 65 | 19 | Tyrone | ||||
| Lisdilion Burn | 46 | 10 | 7 | Clondermot | Derry | |||
| Lisdillon | 46 | 10 | 7 | Clondermot | Derry | T | ||
| Lisdivin Lower | 38 | 4 | x | Donaghedy | Tyrone | T | ||
| Lisdivin Upper | 38 | 5 | 7 | Donaghedy | Tyrone | T | ||
| Lisdonwilly | 86 | 48 | 19 | Armagh | ||||
| Lisdoo | 28 | 60 | 18 | Kilskeery | Tyrone | T | ||
| Lisdoo | 29 | 91 | 12 | Urney | Tyrone | T | ||
| Lisdoo | 42 | 99 | 12 | Leckpatrick | Tyrone | T | ||
| Lisdoo | 50 | 87 | 13 | Tyrone | ||||
| Lisdoo House | 98 | 43 | 19 | Armagh | ||||
| Lisdoonan | 39 | 63 | 20 | Down | T | |||
| Lisdorat | 62 | 55 | 19 | Carnteel | Tyrone | T | ||
| Lisdown | 82 | 46 | 19 | Armagh | ||||
| Lisdrumard | 82 | 43 | 19 | Armagh | ||||
| Lisdrumbrughas | 83 | 40 | 19 | Armagh | ||||
| Lisduff | 81 | 53 | 19 | Clonfeacle | Tyrone | T | ||
| Lisfannan | 33 | 28 | 7 | Burt, Fahan Upper | Donegal | T | ||
| Lisfearty | 70 | 58 | 19 | Killeeshil | Tyrone | T | ||
| Lisgallon | 72 | 58 | x | Donaghmore | Tyrone | T | ||
| Lisgarty Hill | 39 | 66 | 18 | Tyrone | ||||
| Lisginny | 63 | 54 | x | Carnteel | Tyrone | T | ||
| Lisglass | 33 | 89 | 15 | Antrim | ||||
| Lisglass | 44 | 11 | 7 | Clondermot | Derry | T | ||
| Lisgobban | 80 | 54 | x | Clonfeacle | Tyrone | T | ||
| Lisgonnell | 62 | 58 | 19 | Errigal Keerogue | Tyrone | T | ||
| Lisgoole Abby | 23 | 41 | 18 | Fermanagh | ||||
| Lisgorgan (Glebe) | 89 | 5 | 8 | Tamlaght O'Crilly | Derry | T | ||
| Lisgormal House | 43 | 48 | 21 | Down | ||||
| Lisgorran | 57 | 49 | 18 | Clogher | Tyrone | T | ||
| Lisgranaghan | 89 | 7 | 8 | Derry | ||||
| Lishahawley | 47 | 21 | 7 | Derry | ||||
| Lisheegan | 95 | 15 | 8 | Finvoy | Antrim | T | ||
| Lisinaw | 49 | 55 | 21 | Killyleagh | Down | T | ||
| Lisinaw Close | 49 | 55 | 21 | Down | ||||
| Liskenna | 65 | 47 | 19 | Monaghan | ||||
| Liskeran | 13 | 99 | 6 | Stranorlar | Donegal | T | ||
| Liskeran Hill | 12 | 99 | 6 | Stranorlar | Donegal | |||
| Liskeran Hill | 12 | 99 | 12 | Stranorlar | Donegal | |||
| Liskey | 28 | 99 | x | Clonleigh | Donegal | T | ||
| Liskey | 37 | 74 | 12 | Tyrone | ||||
| Liskey Glebe | 31 | 74 | x | Longfield West | Tyrone | T | ||
| Liskinbwee | 36 | 96 | 12 | Camus | Tyrone | T | ||
| Liskincon | 55 | 67 | 18 | Termonmaguirk | Tyrone | T | ||
| Liskittle | 83 | 69 | 19 | Donaghenry | Tyrone | T | ||
| Lisky | 35 | 90 | 12 | Camus | Tyrone | T | ||
| Lisky | 43 | 61 | 18 | Donacavey | Tyrone | T | ||
| Liskyborough | 92 | 48 | 19 | Armagh | ||||
| Lislaban | 8 | 19 | 8 | Loughguile | Antrim | T | ||
| Lislaferty | 36 | 84 | 12 | Ardstraw | Tyrone | T | ||
| Lislagan (Lower) | 95 | 23 | 4 | Ballymoney | Antrim | T | ||
| Lislagan (Lower) | 95 | 23 | 8 | Ballymoney | Antrim | T | ||
| Lislaird | 21 | 82 | x | Termonamongan | Tyrone | T | ||
| Lislaird Bridge | 21 | 82 | 12 | Termonamongan | Tyrone | |||
| Lislane | 47 | 53 | 18 | Clogher | Tyrone | T | ||
| Lislane | 71 | 19 | x | Balteagh | Derry | T | ||
| Lislane Bridge | 71 | 19 | 8 | Balteagh | Derry | |||
| Lislane House | 48 | 51 | 18 | Tyrone | ||||
| Lislane Lough | 49 | 51 | 18 | Tyrone | ||||
| Lislap | 47 | 82 | 13 | Cappagh | Tyrone | |||
| Lislap East | 47 | 82 | x | Cappagh | Tyrone | T | ||
| Lislap West | 40 | 83 | 12 | Cappagh | Tyrone | T | ||
| Lislasly | 87 | 53 | 19 | Armagh | ||||
| Lislea | 34 | 40 | 18 | Aghalurcher | Fermanagh | T | ||
| Lislea | 48 | 69 | x | Cappagh | Tyrone | T | Grey fort | |
| Lislea | 50 | 58 | 18 | Clogher | Tyrone | T | ||
| Lislea | 94 | 7 | 8 | Kilrea | Derry | T | ||
| Lislea House | 47 | 68 | 18 | Tyrone | ||||
| Lislea House | 85 | 40 | 19 | Armagh | ||||
| Lisleal North & South | 45 | 89 | 13 | Bodoney Upper | Tyrone | T | ||
| Lislear Plantation | 36 | 84 | 12 | Tyrone | ||||
| Lislee | 85 | 73 | 14 | Donaghenry | Tyrone | T | ||
| Lisleen | 24 | 80 | 12 | Ardstraw | Tyrone | T | ||
| Lisleen | 40 | 69 | 15 | Comber | Down | T | ||
| Lisleen | 40 | 69 | 21 | Comber | Down | T | ||
| Lisles Hill | 25 | 10 | 9 | Antrim | ||||
| Lislimnaghan | 42 | 75 | 12 | Cappagh | Tyrone | T | ||
| Lisloony | 77 | 42 | 19 | Armagh | ||||
| Lislunnan | 15 | 94 | 14 | Connor | Antrim | T | ||
| Lismacarol | 48 | 13 | 7 | Clondermot | Derry | T | ||
| Lismahon Motte | 43 | 38 | 21 | Down | ||||
| Lismaine | 13 | 56 | 20 | Down | T | |||
| Lismenary | 31 | 94 | 15 | Ballynure | Antrim | T | ||
| Lismoghry | 28 | 10 | 6 | Raymoghy | Donegal | T | ||
| Lismoghry Common | 29 | 10 | 6 | Raymoghy | Donegal | |||
| Lismonaghan | 16 | 9 | 6 | Leck | Donegal | T | ||
| Lismoney House | 83 | 79 | 13 | Derry | ||||
| Lismontigley | 27 | 0 | 6 | Raphoe | Donegal | T | ||
| Lismore | 52 | 50 | 18 | Clogher | Tyrone | T | ||
| Lismore | 56 | 42 | 21 | Dunsfort | Down | T | ||
| Lismore | 62 | 53 | x | Errigal Keerogue | Tyrone | T | ||
| Lismore Bridge | 63 | 53 | 19 | Errigal Keerogue | Tyrone | |||
| Lismore Wood | 62 | 53 | 19 | Tyrone | ||||
| Lismorrity | 3 | 34 | 5 | Grange of Drumtullagh | Antrim | T | ||
| Lismoyle | 87 | 9 | 8 | Tamlaght O'Crilly | Derry | T | ||
| Lismulladown | 73 | 49 | x | Aghanloo | Tyrone | T | ||
| Lismullyduff | 16 | 88 | x | Donaghmore | Donegal | T | ||
| Lismullyduff Mountain | 16 | 88 | 12 | Donaghmore | Donegal | |||
| Lismulrevy | 80 | 58 | 19 | Clonfeacle | Tyrone | T | ||
| Lismurnaghan | x | Ahoghill | Antrim | T | ||||
| Lismurphy | 82 | 30 | 4 | Mascosquin | Derry | T | ||
| Lisnabane Bridge | 37 | 44 | 18 | Fermanagh | ||||
| Lisnabert | 25 | 98 | 6 | Donaghmore | Donegal | T | ||
| Lisnabilla | 16 | 62 | 20 | Antrim | ||||
| Lisnabrague Lodge | 7 | 41 | 20 | Down | ||||
| Lisnabraugh | x | Derrykeighan | Antrim | T | ||||
| Lisnabreeny | 37 | 69 | 15 | Knockbreda | Down | T | ||
| Lisnabreeny | 37 | 69 | 20 | Down | T | |||
| Lisnabulrevey | 44 | 59 | x | Donacavey | Tyrone | T | ||
| Lisnabunny | 62 | 54 | x | Errigal Keerogue | Tyrone | T | ||
| Lisnacalliagh | 17 | 41 | 5 | Antrim | ||||
| Lisnacannon Hill | 0 | 11 | 8 | Antrim | ||||
| Lisnaclin | 81 | 62 | 19 | Drumglass | Tyrone | T | ||
| Lisnacloon | 22 | 83 | 12 | Termonamongan | Tyrone | T | ||
| Lisnacreaght | 39 | 78 | 12 | Ardstraw | Tyrone | T | ||
| Lisnacreaght | 49 | 90 | 13 | Bodoney Upper | Tyrone | T | ||
| Lisnacreeve | 45 | 59 | 18 | Donacavey | Tyrone | T | ||
| Lisnacreeve House | 45 | 59 | 18 | Tyrone | ||||
| Lisnacreve | 24 | 58 | x | Tyrone | ||||
| Lisnacrieve House | 25 | 58 | 18 | Tyrone | ||||
| Lisnacrogher | 10 | 10 | 9 | Skerry | Antrim | T | ||
| Lisnacroy | 80 | 54 | 19 | Clonfeacle | Tyrone | T | ||
| Lisnadill | 88 | 40 | 19 | Armagh | ||||
| Lisnafeedy | 79 | 48 | 19 | Armagh | ||||
| Lisnafiffy House | 10 | 48 | 20 | Down | ||||
| Lisnafillon | x | Ahoghill | Antrim | T | ||||
| Lisnafin | 39 | 88 | 12 | Ardstraw | Tyrone | T | ||
| Lisnafin | 40 | 89 | 12 | Tyrone | ||||
| Lisnafin Glebe | 39 | 88 | 12 | Tyrone | ||||
| Lisnagade | 8 | 44 | 20 | Down | T | |||
| Lisnagade Rath | 8 | 43 | 20 | Down | ||||
| Lisnagalt | 90 | 33 | 4 | Ballyrashane | Derry | T | ||
| Lisnagalt | 90 | 33 | 5 | Ballyrashane | Derry | T | ||
| Lisnagardy | 45 | 60 | 18 | Donacavey | Tyrone | T | ||
| Lisnagarran | 99 | 7 | 8 | Antrim | ||||
| Lisnagarvy | 27 | 65 | x | Blaris | Antrim | T | ||
| Lisnagat | x | Grange of Drumtullagh | Antrim | T | ||||
| Lisnagaver | 95 | 13 | x | Rasharkin | Antrim | T | ||
| Lisnagaver Bridge | 95 | 13 | 8 | Rasharkin | Antrim | |||
| Lisnagelvin | 45 | 16 | 7 | Clondermot | Derry | T | ||
| Lisnagirr | 41 | 76 | x | Cappagh | Tyrone | T | ||
| Lisnagirr House | 41 | 76 | 12 | Cappagh | Tyrone | |||
| Lisnagleer | 77 | 68 | 19 | Pomeroy | Tyrone | T | ||
| Lisnagonogue Wood | 97 | 41 | 4 | Antrim | ||||
| Lisnagore | 28 | 59 | 18 | Tyrone | ||||
| Lisnagowan | 78 | 67 | x | Donaghmore | Tyrone | T | ||
| Lisnagreggan | 6 | 90 | 14 | Drummaul | Antrim | T | ||
| Lisnagrib | 70 | 27 | 4 | Aghanloo | Derry | T | ||
| Lisnagrib | 70 | 27 | 8 | Aghanloo | Derry | T | ||
| Lisnagroat | 92 | 9 | 8 | Tamlaght O'Crilly | Derry | T | ||
| Lisnagroat Water | 92 | 9 | 8 | Tamlaght O'Crilly | Derry | |||
| Lisnagunegue | 97 | 42 | 4 | Billy | Antrim | |||
| Lisnagunogue | 97 | 42 | 5 | Billy | Antrim | |||
| Lisnagunogue Lower | 97 | 42 | 5 | Billy | Antrim | T | ||
| Lisnagunogue Upper | 98 | 41 | 5 | Billy | Antrim | |||
| Lisnagunogue Upper | 98 | 42 | 5 | Billy | Antrim | |||
| Lisnahall | 86 | 76 | x | Artrea | Tyrone | T | ||
| Lisnahanker | 17 | 56 | 20 | Down | T | |||
| Lisnahanna | 28 | 56 | 18 | Kilskeery | Tyrone | T | ||
| Lisnaharney | 46 | 83 | 13 | Cappagh | Tyrone | T | ||
| Lisnaharny Burn | 46 | 83 | 13 | Tyrone | ||||
| Lisnahilt | 17 | 3 | 9 | Racavan | Antrim | T | ||
| Lisnahoy | 83 | 61 | x | Killyman | Tyrone | T | ||
| Lisnahull | 78 | 63 | 19 | Donaghmore | Tyrone | T | ||
| Lisnahunshin | x | Craigs | Antrim | T | ||||
| Lisnakea | 3 | 44 | 20 | Armagh | T | |||
| Lisnakilly | x | Tamlaght Finlagan | Derry | T | ||||
| Lisnalinchy | 29 | 88 | 15 | Ballylinny | Antrim | T | ||
| Lisnalinchy Burn | 29 | 87 | 15 | Antrim | ||||
| Lisnamaghery | 55 | 51 | x | Clogher | Tyrone | T | ||
| Lisnamaghery Lough | 55 | 52 | 18 | Tyrone | ||||
| Lisnamallard | 44 | 73 | x | Cappagh | Tyrone | T | ||
| Lisnamallard House | 45 | 73 | Old | Cappagh | Tyrone | |||
| Lisnamallard Mills | 45 | 73 | Old | Cappagh | Tyrone | |||
| Lisnamanny | 13 | 15 | 9 | Dunaghy | Antrim | T | ||
| Lisnamanny | x | Dunaghy | Antrim | T | ||||
| Lisnamaul | 44 | 42 | x | Down | Down | T | ||
| Lisnamonaghan | 75 | 62 | x | Donaghmore | Tyrone | T | ||
| Lisnamore | 45 | 50 | 21 | Kilmore | Down | T | ||
| Lisnamorrow | 92 | 88 | x | Artrea | Derry | T | ||
| Lisnamorrow House | 92 | 88 | 14 | Artrea | Derry | |||
| Lisnamuck | 80 | 99 | 13 | Maghera | Derry | T | ||
| Lisnamuck | 86 | 22 | 4 | Aghadowey | Derry | T | ||
| Lisnamuck | 86 | 22 | 8 | Aghadowey | Derry | T | ||
| Lisnamuck Bridge | 82 | 98 | 13 | Derry | ||||
| Lisnamulligan | 24 | 93 | 12 | Donaghmore | Donegal | T | ||
| Lisnamurrikin | 16 | 4 | 9 | Racavan | Antrim | T | ||
| Lisnanane | 79 | 71 | 13 | Desertcreat | Tyrone | T | ||
| Lisnanane Bridge | 78 | 71 | 13 | Tyrone | ||||
| Lisnarable | 51 | 60 | 18 | Clogher | Tyrone | T | ||
| Lisnaragh Bridge | 46 | 0 | 7 | Tyrone | ||||
| Lisnaragh Irish | 46 | 0 | 7 | Donaghedy | Tyrone | T | ||
| Lisnaragh Scotch | 46 | 1 | 7 | Donaghedy | Tyrone | T | ||
| Lisnaree | 15 | 45 | 20 | Down | T | |||
| Lisnaree | 17 | 98 | 6 | Stranorlar, Convoy | Donegal | T | ||
| Lisnarick | 90 | 34 | 4 | Ballyrashane | Derry | T | ||
| Lisnarick | 90 | 34 | 5 | Ballyrashane | Antrim | T | ||
| Lisnasallagh | 38 | 64 | 20 | Down | T | |||
| Lisnascreghog | 77 | 12 | 8 | Errigal | Derry | T | ||
| Lisnasharragh | 36 | 71 | x | Knockbreda | Down | T | ||
| Lisnaskea Forest | 40 | 41 | 18 | Fermanagh | ||||
| Lisnaskea Forest | 43 | 41 | 18 | Fermanagh | ||||
| Lisnasliggan | 16 | 40 | 20 | Down | T | |||
| Lisnasoo | 5 | 16 | x | Grange of Dundermot | Antrim | T | ||
| Lisnasoo Far | 5 | 16 | 8 | Grange of Dundermot | Antrim | |||
| Lisnasoo Nearr | 5 | 16 | 8 | Grange of Dundermot | Antrim | |||
| Lisnastrane | 84 | 67 | 19 | Clonloe | Tyrone | T | ||
| Lisnastrean | 28 | 61 | 20 | Down | ||||
| Lisnasure | 14 | 54 | 20 | Down | T | |||
| Lisnataylor | 19 | 80 | 14 | Killead | Antrim | T | ||
| Lisnatrunk | 28 | 65 | x | Lambeg | Down | T | ||
| Lisnatunney | 38 | 86 | 12 | Tyrone | ||||
| Lisnatunny Glebe | 38 | 87 | x | Ardstraw | Tyrone | T | ||
| Lisnatunny House | 38 | 87 | 12 | Tyrone | ||||
| Lisnawery | 60 | 54 | x | Errigal Keerogue | Tyrone | T | ||
| Lisnawhiggel | 13 | 97 | 14 | Connor | Antrim | T | ||
| Lisnawhiggel | 13 | 97 | 9 | Connor | Antrim | T | ||
| Lisneal | 46 | 16 | 7 | Clondermot | Derry | T | ||
| Lisneal | 60 | 20 | 4 | Derry | ||||
| Lisneal | 60 | 20 | 7 | Derry | ||||
| Lisneight | 85 | 73 | x | Donaghenry | Tyrone | T | ||
| Lisnenan | 18 | 13 | 6 | Conwal | Donegal | T | ||
| Lisnevanagh | 13 | 92 | 14 | Grange of Shilvodan | Antrim | T | ||
| Lisnevin | 60 | 74 | 15 | Down | ||||
| Lisnhilt | 17 | 3 | 9 | Racavan | Antrim | T | ||
| Lisnisk | 4 | 23 | 8 | Loughguile | Antrim | T | ||
| Lisnisk | 91 | 33 | 4 | Ballyrashane | Antrim | T | ||
| Lisnisk | 91 | 33 | 5 | Ballyrashane | Antrim | T | ||
| Lisnmurrikin Bridge | 16 | 4 | 9 | Antrim | ||||
| Lisnoble | 25 | 2 | 6 | Raphoe | Donegal | T | ||
| Lisnode | 32 | 62 | 20 | Antrim | T | |||
| Lisnoe | 27 | 61 | 20 | Down | T | |||
| Lisoid | 50 | 37 | 21 | Bright | Down | T | ||
| Lisowen | 42 | 55 | 21 | Saintfield | Down | T | ||
| Lisraw | 4 | 40 | 20 | Armagh | T | |||
| Lisraw Fort | 4 | 40 | 20 | Armagh | ||||
| Lisreagh | 29 | 42 | 18 | Fermanagh | ||||
| Lisregh | 21 | 83 | 12 | Tyrone | ||||
| Lisroan | 84 | 57 | 19 | Clonfeacle | Tyrone | T | ||
| Lisrodden | 99 | 6 | 8 | Portglenone | Antrim | T | ||
| Lisroosky Bridge | 66 | 49 | 19 | Armagh | ||||
| Lissagally | 80 | 41 | 19 | Armagh | ||||
| Lissaghmore | x | Agivey | Derry | T | ||||
| Lissahawley | x | Clondermot | Derry | T | ||||
| Lissan | 27 | 47 | 18 | Fermanagh | ||||
| Lissan | 45 | 70 | 13 | Drumragh | Tyrone | T | ||
| Lissan | 79 | 59 | 19 | Clonfeacle | Tyrone | T | ||
| Lissan | 79 | 82 | 13 | Lissan | Tyrone | T | ||
| Lissan Rectory | 82 | 80 | 13 | Derry | ||||
| Lissan, Bridge | 45 | 70 | 13 | Tyrone | ||||
| Lissanduff | 93 | 42 | 4 | Bushfoot | Dunluce | Antrim | T | |
| Lissanduff | 93 | 42 | 5 | Bushfoot | Dunluce | Antrim | T | |
| Lissaneden | 37 | 60 | x | Dromore | Tyrone | T | ||
| Lissara | 44 | 51 | 21 | Kilmore | Down | T | ||
| Lissenderry | 65 | 54 | 19 | Carnteel | Tyrone | |||
| Lisserluss | 96 | 44 | 4 | Billy | Antrim | T | ||
| Lisserluss | 96 | 44 | 5 | Billy | Antrim | T | ||
| Lissheffield | 92 | 51 | 19 | Armagh | ||||
| Lissinisk | 18 | 2 | 6 | Convoy | Donegal | T | ||
| Lissinore | 19 | 2 | 6 | Convoy | Donegal | T | ||
| Lissue | 23 | 63 | 20 | Teraghafeeva | Antrim | T | ||
| Listack | 14 | 6 | 6 | Conwal | Donegal | T | ||
| Listamlet | 85 | 58 | 19 | Clonfeacle | Tyrone | T | ||
| Listannagh | 31 | 4 | 6 | Taughboyne | Donegal | T | ||
| Listannagh | 31 | 4 | 7 | Taughboyne | Donegal | T | ||
| Listellian | 19 | 8 | 6 | Leck | Donegal | T | ||
| Listicall (Lower & Upper) | 33 | 13 | 6 | Taughboyne | Donegal | T | ||
| Listicall (Lower & Upper) | 33 | 13 | 7 | Taughboyne | Donegal | T | ||
| Listooder | 42 | 52 | 21 | Kilmore | Down | T | ||
| Listooder Hill | 41 | 52 | 21 | Down | ||||
| Listress | 52 | 12 | 7 | Cumber Lower | Derry | T | ||
| Listress Bridge | 52 | 11 | 7 | Cumber Lower | Derry | |||
| Listullycurran | 20 | 56 | 20 | Down | T | |||
| Listymore | 28 | 87 | 12 | Ardstraw | Tyrone | T | ||
| Liswatty Lower | 90 | 32 | 4 | Ballyrashane | Derry | T | ||
| Liswatty Lower | 90 | 32 | 5 | Ballyrashane | Derry | T | ||
| Liswatty Upper | 89 | 32 | 4 | Derry | ||||
| Little Ballymena | 31 | 89 | 15 | Ballynure | Antrim | T | ||
| Little Black Sythe | 10 | 42 | 5 | Antrim | ||||
| Little Bridge | 86 | 78 | 14 | Derry | ||||
| Little Derry | 73 | 19 | 8 | Balteagh | Derry | T | ||
| Little Minnis's Island | 55 | 60 | 21 | Down | ||||
| Little Ringan | x | Ballyaghran | Derry | T | ||||
| Little Wisker | 31 | 89 | 12 | Tyrone | ||||
| Littlemount | 36 | 40 | 18 | Fermanagh | ||||
| Littlemount Bridge | 36 | 40 | 18 | Fermanagh | ||||
| Livery Hill | 1 | 29 | 5 | Derrykeighan | Antrim | |||
| Livery Hill | 1 | 29 | 8 | Derrykeighan | Antrim | |||
| Livery Lower | 1 | 29 | x | Derrykeighan | Antrim | T | ||
| Lizard Manor | 87 | 23 | 8 | Derry | ||||
| Lizard Manor | 88 | 22 | 4 | Derry | ||||
| Loan | 2 | 6 | 8 | Craigs | Antrim | T | ||
| Loan Hill | 2 | 5 | 8 | Craigs | Antrim | |||
| Loanends | 22 | 81 | 14 | Antrim | ||||
| Lobster Rock | 43 | 82 | 15 | Down | ||||
| Locard Park | 8 | 48 | 20 | Down | ||||
| Lock | 22 | 45 | 18 | Fermanagh | ||||
| Lock Bridge | 50 | 23 | 7 | Derry | ||||
| Locks | 93 | 12 | 8 | Derry | ||||
| Lockstown | 43 | 95 | 9 | Templecorran | Antrim | T | ||
| Lodge | x | Coleraine | Derry | T | ||||
| Lodge Cross Roads | 67 | 68 | 19 | Tyrone | ||||
| Lodge Hill | 12 | 70 | 14 | Antrim | ||||
| Lodge, New | 13 | 98 | 9 | Antrim | ||||
| Lodge, The | 40 | 42 | 21 | Down | ||||
| Loganstown | 6 | 97 | 14 | Antrim | ||||
| Loghacleggan | 70 | 76 | 13 | Tyrone | ||||
| Loguestown | x | Coleraine | Derry | T | ||||
| Lomond | x | Tamlaght Finlagan | Derry | T | ||||
| Lonagher Burn | 94 | 18 | 8 | Antrim | ||||
| Londonderry | 44 | 17 | 7 | Templemore | Derry | T | ||
| Loney's Town | 93 | 48 | 19 | Armagh | ||||
| Long Causeway | 2 | 44 | 5 | Antrim | ||||
| Long Gilbert | 2 | 45 | 5 | Ballintoy | Antrim | T | ||
| Long Glen River | 61 | 45 | 4 | Donegal | ||||
| Long Hill | 58 | 53 | 18 | Tyrone | ||||
| Long Hill | 68 | 31 | 4 | Derry | ||||
| Long Island | 20 | 51 | 18 | Fermanagh | ||||
| Long Island | 51 | 64 | 21 | Down | ||||
| Long Island | 58 | 57 | 21 | Down | ||||
| Long Isle | 60 | 75 | 15 | Down | ||||
| Long Kesh, The | 22 | 61 | 20 | Down | ||||
| Long Lough, The | 37 | 55 | 20 | Down | ||||
| Long Mountain | 99 | 16 | 8 | Antrim | ||||
| Long Plate | 54 | 35 | 21 | Down | ||||
| Long Point | 54 | 55 | 21 | Down | ||||
| Long Point | 97 | 95 | 14 | Derry | ||||
| Long Rock | 54 | 53 | 21 | Down | ||||
| Long Rock | 63 | 70 | 15 | Down | ||||
| Long Rock | 63 | 70 | 21 | Down | ||||
| Long Rock | 99 | 85 | 14 | Antrim | ||||
| Long Rocks | 45 | 34 | 21 | Down | ||||
| Long Sand, The | 63 | 68 | 15 | Down | ||||
| Long Sand, The | 63 | 68 | 21 | Down | ||||
| Long Sheelah | 56 | 58 | 21 | Down | ||||
| Long Skart Rock | 56 | 63 | 21 | Down | ||||
| Long Stone, The | 54 | 46 | 21 | Down | ||||
| Long Stone, The | 88 | 46 | 19 | Armagh | ||||
| Long's Glebe | x | Dunboe | Derry | T | ||||
| Longcraft | 11 | 97 | 6 | Donegal | ||||
| Longcraft | 11 | 97 | 12 | Donegal | ||||
| Longfield | 28 | 12 | 9 | Tickmacrevan | Antrim | T | ||
| Longfield | 83 | 92 | 13 | Desertmartin | Derry | T | ||
| Longfield Bank | 54 | 25 | 7 | Derry | ||||
| Longfield Beg | 54 | 21 | 7 | Faughanvale | Derry | T | ||
| Longfield Bridge | 54 | 22 | 7 | Derry | ||||
| Longfield Bridge | 84 | 91 | 13 | Derry | ||||
| Longfield Glebe, Upper | 34 | 73 | 12 | Tyrone | ||||
| Longfield Level | 53 | 23 | 7 | Derry | ||||
| Longhill | 32 | 65 | 18 | Dromore | Tyrone | T | ||
| Longhurst | 31 | 68 | 15 | Antrim | ||||
| Longhurst | 31 | 68 | 20 | Antrim | ||||
| Longland | 51 | 15 | 7 | Derry | ||||
| Longlands | 48 | 70 | 15 | Comber | Down | T | ||
| Longlands | 48 | 70 | 21 | Comber | Down | T | ||
| Longmore | 20 | 12 | 9 | Skerry | Antrim | T | ||
| Longmore Top | 21 | 11 | 9 | Antrim | ||||
| Longmore Wood | 21 | 11 | 9 | Antrim | ||||
| Longridge | 57 | 56 | 18 | Clogher | Tyrone | T | ||
| Longstown | 19 | 70 | 14 | Antrim | ||||
| Looaghpenning | 53 | 4 | 7 | Derry | ||||
| Looblands | 3 | 20 | 8 | Antrim | ||||
| Loon Burn | 21 | 94 | 14 | Antrim | ||||
| Loonburn | 21 | 94 | 14 | Kilbride | Antrim | T | ||
| Loonburn Bridge | 22 | 95 | 14 | Kilbride | Antrim | |||
| Loonburn Bridge | 22 | 95 | 9 | Antrim | ||||
| Loop Burn | 26 | 96 | 9 | Antrim | ||||
| Loop Hill | 49 | 46 | 21 | Down | ||||
| Loop, The | 3 | 23 | 8 | Antrim | ||||
| Loop, The | 36 | 91 | 12 | Tyrone | ||||
| Loop, The | 47 | 81 | 13 | Tyrone | ||||
| Loop, The | 51 | 66 | 18 | Tyrone | ||||
| Lord, The | 48 | 93 | 15 | Antrim | ||||
| Lorne | 42 | 80 | 15 | Down | ||||
| Lorne, The | 94 | 7 | 8 | Derry | ||||
| Losset | 7 | 20 | 6 | Gartan | Donegal | T | ||
| Losset | 15 | 38 | 5 | Culfeightrin | Antrim | T | ||
| Losset | 46 | 50 | 18 | Clogher | Tyrone | T | ||
| Lough a vigh | 24 | 70 | 12 | Fermanagh | ||||
| Lough Beg | 11 | 69 | 20 | Portmore Lough | Antrim | |||
| Lough Bridge | 20 | 35 | 5 | Antrim | ||||
| Lough Doo | 17 | 43 | 5 | Antrim | ||||
| Lough Emy House | 69 | 45 | 19 | Monaghan | ||||
| Lough Hill | 7 | 89 | 12 | Donegal | ||||
| Lough Hill | 15 | 95 | 6 | Stranorlar | Donegal | T | ||
| Lough Hill | 25 | 75 | 12 | Tyrone | ||||
| Lough Hill | 37 | 66 | 15 | Down | ||||
| Lough Hill | 37 | 66 | 20 | Down | ||||
| Lough Hill | 47 | 59 | 21 | Down | ||||
| Lough House, The | 6 | 89 | 12 | Donegal | ||||
| Lough Moss | 23 | 51 | 20 | Down | ||||
| Lough Neagh Discovery Centre | 4 | 62 | 20 | Armagh | ||||
| Lough Park | 8 | 41 | 5 | Antrim | ||||
| Lough Quarter | 45 | 45 | 21 | Down | ||||
| Lough Sallagh | 5 | 91 | 12 | Kilteevoge | Donegal | T | ||
| Lough-a-verrie | 4 | 39 | 5 | Antrim | ||||
| Loughabin | 1 | 23 | 8 | Antrim | ||||
| Loughadian | 7 | 40 | 20 | Down | T | |||
| Loughadirn | 20 | 73 | 12 | Fermanagh | ||||
| Loughagannon | 19 | 16 | 6 | Aghanunshin | Donegal | T | ||
| Loughagarran | 58 | 63 | 18 | Tyrone | ||||
| Loughahult | 7 | 79 | 12 | Limestone Lough | Tyrone | |||
| Loughaleen | 51 | 43 | 18 | Tyrone | ||||
| Loughaleen | 56 | 77 | 13 | Tyrone | ||||
| Loughan | 23 | 37 | 5 | Culfeightrin | Antrim | T | ||
| Loughan | 29 | 22 | 9 | Antrim | ||||
| Loughan Bay | 24 | 38 | 5 | Culfeightrin | Antrim | |||
| Loughan Hill | 46 | 1 | 7 | Tyrone | ||||
| Loughan Hill | x | Coleraine | Derry | T | ||||
| Loughan Island | x | Kildollagh | Derry | T | ||||
| Loughanalbanagh | 54 | 44 | 18 | Tyrone | ||||
| Loughanboy | 11 | 91 | 12 | Donegal | ||||
| Loughanhim Hill | 7 | 70 | 12 | Donegal | ||||
| Loughaniroona | 18 | 19 | 9 | Antrim | ||||
| Loughanmore | 21 | 86 | 14 | Antrim | ||||
| Loughanreagh North | 87 | 29 | x | Kildollagh | Derry | T | ||
| Loughanreagh South | 87 | 29 | 4 | Kildollagh | Derry | |||
| Loughanreagh South | 87 | 29 | 8 | Kildollagh | Derry | |||
| Loughanroe | 7 | 21 | 6 | Donegal | ||||
| Loughans | 5 | 48 | 20 | Down | T | |||
| Loughans | 66 | 56 | 19 | Carnteel | Tyrone | T | ||
| Loughans Lane Ends | 32 | 46 | 20 | Down | ||||
| Loughany Rocks | 20 | 74 | 12 | Tyrone | ||||
| Loughapoldoo | 6 | 82 | 12 | Tyrone | ||||
| Loughareema | 20 | 36 | 5 | Vanishing Lake | Antrim | |||
| Loughascraban | 24 | 19 | 9 | Antrim | ||||
| Loughash | 50 | 1 | 7 | Donaghedy | Tyrone | T | ||
| Loughaskerry | 9 | 20 | 6 | Kilmacrenan | Donegal | T | ||
| Loughaslane | 67 | 78 | 13 | Tyrone | ||||
| Loughbarra | 98 | 9 | x | Croagheen | Gartan | Donegal | T | |
| Loughbrickland | 10 | 42 | 20 | Down | ||||
| Loughdhu Bog | 42 | 95 | 9 | Antrim | ||||
| Loughdoo | 9 | 79 | 12 | Tyrone | ||||
| Loughdoo | 20 | 74 | 12 | Tyrone | ||||
| Loughdoo | 23 | 71 | 12 | Tyrone | ||||
| Loughdoo | 61 | 56 | x | Castleboy | Down | T | ||
| Loughduff | 32 | 6 | 9 | Carncastle | Antrim | T | ||
| Loughduff Burn | 32 | 5 | 9 | Antrim | ||||
| Loughermore | 59 | 14 | 7 | Faughanvale | Derry | T | ||
| Loughermore | x | Grange of Nilteen | Antrim | T | ||||
| Loughermore Bridge | 58 | 12 | 7 | Faughanvale | Derry | |||
| Loughermore East | 66 | 16 | 7 | Derry | ||||
| Loughermore Forest | 58 | 14 | 7 | Derry | ||||
| Loughermore Forest East | 62 | 16 | 7 | Derry | ||||
| Loughermore Glebe | 48 | 48 | x | Aghalurcher | Tyrone | T | ||
| Loughermore River | 59 | 13 | 7 | Derry | ||||
| Loughfad Hill | 5 | 70 | 12 | Templecarn | Donegal | |||
| Loughfalcon | 44 | 41 | 21 | Down | ||||
| Loughfine | 26 | 20 | 9 | Antrim | ||||
| Loughgall | 90 | 52 | 19 | Armagh | ||||
| Loughgarv | 21 | 17 | 9 | Antrim | ||||
| Loughguile | 7 | 25 | 5 | Antrim | ||||
| Loughguile | 7 | 25 | 8 | Antrim | ||||
| Loughhead | 46 | 93 | 15 | Antrim | ||||
| Loughhill | x | Killagan | Antrim | T | ||||
| Loughinisland | 41 | 45 | 21 | Down | ||||
| Loughinisland Lake | 42 | 45 | 21 | Down | ||||
| Loughinsholin | 84 | 92 | 13 | Derry | ||||
| Loughisland | 25 | 19 | 9 | Antrim | ||||
| Loughkeelan | 55 | 45 | 21 | Ballyculter | Down | T | ||
| Loughkeelan | 56 | 45 | 21 | Down | ||||
| Loughloughan | 18 | 9 | 9 | Skerry | Antrim | T | ||
| Loughlynch | 99 | 36 | 4 | Billy | Antrim | T | ||
| Loughlynch | 99 | 36 | 5 | Billy | Antrim | T | ||
| Loughmacrory | 57 | 77 | x | Termonmaguirk | Tyrone | T | ||
| Loughmacrory Hill | 59 | 77 | 13 | Tyrone | ||||
| Loughmagarry | x | Craigs | Antrim | T | ||||
| Loughmoney | 53 | 45 | 21 | Ballee | Down | T | ||
| Loughmuck (Alcorn) | 43 | 68 | x | Drumragh | Tyrone | T | Lake of the pigs | |
| Loughmuck (Wallace) | 42 | 67 | x | Drumragh | Tyrone | T | ||
| Loughnaboy | 19 | 74 | 12 | Tyrone | ||||
| Loughnabrick | 25 | 19 | 9 | Antrim | ||||
| Loughnacally | 25 | 21 | 9 | Antrim | ||||
| Loughnacarry | 22 | 21 | 9 | Antrim | ||||
| Loughnacrackin | 56 | 78 | 13 | Tyrone | ||||
| Loughnacree | 56 | 78 | 13 | Tyrone | ||||
| Loughnadarragh | 56 | 77 | 13 | Tyrone | ||||
| Loughnafanogy | 19 | 20 | 9 | Antrim | ||||
| Loughnafooranaght | 56 | 79 | 13 | Tyrone | ||||
| Loughnafreaghoge | 57 | 79 | 13 | Tyrone | ||||
| Loughnagay | 63 | 77 | 13 | Tyrone | ||||
| Loughnageeragh | 19 | 75 | 12 | Tyrone | ||||
| Loughnagin | 19 | 13 | 6 | Aghanunshin | Donegal | T | ||
| Loughnagin | 37 | 75 | 12 | Tyrone | ||||
| Loughnakinroey | 9 | 83 | 12 | Tyrone | ||||
| Loughnamaddy | 56 | 79 | 13 | Tyrone | ||||
| Loughnamarve | 66 | 74 | 13 | Tyrone | ||||
| Loughnanskan | 11 | 52 | 5 | Antrim | ||||
| Loughnapeast | 56 | 77 | 13 | Tyrone | ||||
| Loughnashade | 85 | 45 | 19 | Armagh | ||||
| Loughnatorpoge | 57 | 78 | 13 | Tyrone | ||||
| Loughnatrosk | 27 | 19 | 9 | Antrim | ||||
| Loughnaweelagh | 5 | 83 | 12 | Donegal | ||||
| Loughnaweelan | 19 | 18 | 9 | Antrim | ||||
| Loughneas | 37 | 4 | 7 | Leckpatrick | Tyrone | T | ||
| Loughpatrick | 50 | 68 | 18 | Tyrone | ||||
| Loughrelisk | 16 | 66 | 20 | Antrim | T | |||
| Loughries | 52 | 72 | 15 | Down | ||||
| Loughries | 52 | 72 | 21 | Down | ||||
| Loughriscouse | 52 | 73 | x | Newtownards | Down | T | ||
| Loughriscouse | 52 | 74 | 15 | Newtownards | Down | T | ||
| Loughry | 81 | 74 | x | Derryloran | Tyrone | T | ||
| Loughry Colleg | 81 | 74 | 13 | Tyrone | ||||
| Loughry Demesne | 81 | 74 | x | Derryloran | Tyrone | T | ||
| Loughry Demesne | 81 | 74 | x | Desertcreat | Tyrone | T | ||
| Loughshore Park | 36 | 83 | 15 | Antrim | ||||
| Loughside Park | 34 | 78 | 15 | Antrim | ||||
| Loughterush | 28 | 56 | 18 | Kilskeery | Tyrone | T | ||
| Loughtilube | 58 | 3 | 7 | Derry | ||||
| Loughtoornakerogh | 67 | 79 | 13 | Tyrone | ||||
| Loughview | 16 | 89 | 14 | Antrim | ||||
| Loughview | 30 | 74 | 15 | Antrim | ||||
| Loughview | 42 | 70 | 15 | Down | ||||
| Loughview | 42 | 70 | 21 | Down | ||||
| Loughview | 44 | 97 | 9 | Antrim | ||||
| Loughview | 88 | 79 | 14 | Derry | ||||
| Loughview House | 27 | 78 | 15 | Antrim | ||||
| Lougnacreevage | 56 | 79 | 13 | Tyrone | ||||
| Lounhtilube | Learmount | Derry | T | |||||
| Loup, The | 90 | 84 | 14 | Derry | ||||
| Love's Corkey | x | Loughguile | Antrim | T | ||||
| Love's Hill | 91 | 92 | 14 | Derry | ||||
| Lovestown | 3 | 13 | 8 | Antrim | ||||
| Low Cross | 82 | 72 | 13 | Desertcreat | Tyrone | T | ||
| Low Town | 7 | 31 | 5 | Antrim | ||||
| Low Town | 9 | 51 | 20 | Down | ||||
| Low Town | 22 | 94 | 6 | Donegal | ||||
| Low Town | 28 | 47 | 20 | Down | ||||
| Low Town | 36 | 86 | 12 | Tyrone | ||||
| Low Wood | 33 | 78 | x | Shankill | Antrim | T | ||
| Lower Town | 39 | 10 | 7 | Tyrone | ||||
| Lower Town | 43 | 4 | 7 | Tyrone | ||||
| Lower Town | 84 | 86 | 13 | Derry | ||||
| Lower Town | 89 | 99 | 14 | Derry | ||||
| Lower Town | 91 | 9 | 8 | Derry | ||||
| Lower Town | 95 | 2 | 8 | Derry | ||||
| Lower Tullykittagh | x | Dunaghy | Antrim | T | ||||
| Lowerhill | 11 | 62 | 20 | Antrim | ||||
| Lowertown | 46 | 5 | 7 | Tyrone | ||||
| Lowertown | 82 | 62 | 19 | Killyman | Tyrone | T | ||
| Lowertown | 94 | 91 | 14 | Derry | ||||
| Lowna River | 6 | 6 | 6 | Donegal | ||||
| Lowry's Lough | 91 | 44 | 19 | Armagh | ||||
| Lowrys Town | 95 | 2 | 8 | Derry | ||||
| Lowtown | 4 | 15 | 8 | Antrim | ||||
| Lowtown | 10 | 64 | 20 | Antrim | ||||
| Lowtown | 25 | 41 | 20 | Down | ||||
| Lowtown | 25 | 84 | 15 | Antrim | ||||
| Lowtown | 28 | 0 | 9 | Antrim | ||||
| Lowtown | 35 | 99 | 9 | Kilwaughter | Antrim | T | ||
| Lowtown Burn | 28 | 0 | 9 | Antrim | ||||
| Loy | 80 | 78 | x | Derryloran | Tyrone | T | ||
| Lubber | 18 | 13 | 6 | Donegal | ||||
| Lubitavish | 21 | 28 | 5 | Antrim | ||||
| Lucerne | 45 | 73 | 15 | Down | ||||
| Lucerne | 45 | 73 | 21 | Down | ||||
| Luddan | 35 | 29 | 7 | Fahan Lower | Donegal | T | ||
| Lug, Lough | 87 | 83 | 14 | Derry | ||||
| Lugmore | 19 | 70 | 12 | Fermanagh | ||||
| Lugmore Hill | 62 | 41 | 4 | Donegal | ||||
| Lukes Hill | 94 | 5 | 8 | Derry | ||||
| Lukes Point | 51 | 82 | 15 | Down | ||||
| Luney | 87 | 92 | 14 | Desertmartin | Derry | T | ||
| Luney Bridge | 86 | 93 | 14 | Desertmartin | Derry | |||
| Luney Villas | 86 | 92 | 14 | Desertmartin | Derry | |||
| Lungs | 49 | 50 | x | Clogher | Tyrone | T | ||
| Lurgaboy | 80 | 64 | x | Drumglass | Tyrone | T | ||
| Lurgacullion | 66 | 60 | x | Killeeshil | Tyrone | T | ||
| Lurgan | 8 | 58 | 20 | Armagh | ||||
| Lurgan | x | Clogher | Tyrone | T | ||||
| Lurgan Bridge | 54 | 38 | 21 | Down | ||||
| Lurganaglare | 48 | 59 | 18 | Clogher | Tyrone | T | ||
| Lurganagoose | x | Termoneeny | Derry | T | ||||
| Lurganbane | 22 | 52 | 20 | Down | T | |||
| Lurganboy | 25 | 63 | 18 | Fermanagh | ||||
| Lurganboy | 26 | 87 | 12 | Ardstraw | Tyrone | T | ||
| Lurganboy | 39 | 57 | 18 | Donacavey | Tyrone | T | ||
| Lurganboy | 41 | 82 | 12 | Cappagh | Tyrone | T | ||
| Lurganboy | 61 | 65 | x | Errigal Keerogue | Tyrone | T | ||
| Lurganboy | 84 | 75 | 13 | Artrea | Tyrone | T | ||
| Lurganboy Bridge | 61 | 65 | 19 | Tyrone | ||||
| Lurganeden | 71 | 70 | 13 | Pomeroy | Tyrone | T | ||
| Lurganmore | 63 | 63 | 19 | Tyrone | ||||
| Lurgansemanus | 13 | 63 | 20 | Antrim | T | |||
| Lurganshannagh | 28 | 0 | x | Clonleigh | Donegal | T | ||
| Lurgantamry | 14 | 53 | 20 | Down | T | |||
| Lurgantarry | 8 | 60 | 20 | Armagh | T | |||
| Lurganteneil | 18 | 70 | 14 | Antrim | ||||
| Lurganure | 21 | 62 | 20 | Antrim | T | |||
| Lurganville | 18 | 59 | 20 | Down | T | |||
| Lurgill | 12 | 69 | 20 | Antrim | T | |||
| Lurgill House | 14 | 69 | 20 | Antrim | ||||
| Lurgy | 20 | 8 | 6 | Leck | Donegal | T | ||
| Lurgy | 82 | 70 | 13 | Donaghenry | Tyrone | T | ||
| Lurgy | 92 | 3 | 8 | Derry | ||||
| Lurgy Brack | 19 | 9 | x | Leck | Donegal | T | ||
| Lurgy River | 11 | 23 | 6 | Donegal | ||||
| Lurgy River | 13 | 21 | 6 | Donegal | ||||
| Lurgylea | 70 | 67 | 19 | Pomeroy | Tyrone | T | ||
| Lurgyroe | 94 | 74 | x | Arboe | Tyrone | T | ||
| Lurigethan | 22 | 25 | 5 | Antrim | ||||
| Lurnganboy | 58 | 65 | Old | Tyrone | ||||
| Lusky Bridge | 47 | 61 | 21 | Down | ||||
| Lyle | 24 | 82 | 14 | Antrim | ||||
| Lyles Hill | 24 | 82 | 14 | Antrim | ||||
| Lylo | 4 | 54 | 20 | Armagh | T | |||
| Lyndhurst | 90 | 25 | 4 | Antrim | ||||
| Lynn, The | 70 | 26 | 8 | Derry | ||||
| Lynn's Bridge | 22 | 99 | 14 | Antrim | ||||
| Lynn's Bridge | 22 | 99 | 9 | Antrim | ||||
| Lyon's Isle | 33 | 97 | 6 | Tyrone | ||||
| Lyons Bridge | 40 | 52 | 21 | Down | ||||
| Lythe Rock | 53 | 63 | 21 | Down |