| Feature | X | Y | Map | AKA | Parish | County | Type | Feature Meaning |
| Faccary | 51 | 77 | 13 | Feckarry Feccary | Cappagh | Tyrone | T | |
| Faccary Bridge | 51 | 76 | 13 | Cappagh | Tyrone | |||
| Fad, Lough | 5 | 71 | 12 | Donegal | ||||
| Fad, Lough | 25 | 19 | 9 | Antrim | ||||
| Fadda, Lough | 45 | 48 | 18 | Tyrone | ||||
| Fadden, Lough | 18 | 42 | 5 | Antrim | ||||
| Fahan (Level) | 33 | 27 | 7 | Fahan Upper | Donegal | T | ||
| Fahykeen | 5 | 11 | 6 | Conwal | Donegal | T | ||
| Fair Head | 17 | 43 | 5 | Benmore Head | Antrim | |||
| Fair Hill | 15 | 84 | 14 | Antrim | ||||
| Fair View | 1 | 61 | 20 | Armagh | ||||
| Fair View | 6 | 94 | 14 | Antrim | ||||
| Fair View | 13 | 64 | 20 | Antrim | ||||
| Fair View | 14 | 66 | 20 | Antrim | ||||
| Fair View | 19 | 76 | 14 | Antrim | ||||
| Fair View | 20 | 51 | 20 | Down | ||||
| Fair View | 41 | 58 | 18 | Tyrone | ||||
| Fair View | 61 | 71 | 15 | Down | ||||
| Fair View | 61 | 71 | 21 | Down | ||||
| Fair View | 69 | 20 | 4 | Derry | ||||
| Fair View | 69 | 20 | 7 | Derry | ||||
| Fair View | 77 | 33 | 4 | Derry | ||||
| Fair View | 84 | 41 | 19 | Armagh | ||||
| Fair View | 94 | 52 | 19 | Armagh | ||||
| Fair View | 95 | 57 | 19 | Armagh | ||||
| Fairgreen | 43 | 71 | Old | Tyrone | ||||
| Fairies Hill | 15 | 66 | 20 | Antrim | ||||
| Fairlawn Bridge | 87 | 55 | 19 | Armagh | ||||
| Fairmount | 46 | 76 | 15 | Down | ||||
| Fairmount House | 61 | 2 | 7 | Derry | ||||
| Fairview | 37 | 6 | 7 | Tyrone | ||||
| Fairview | 46 | 79 | 15 | Down | ||||
| Fairview | 86 | 12 | 8 | Derry | ||||
| Fairview | 87 | 94 | 14 | Derry | ||||
| Fairview Cemetery | 86 | 43 | 19 | Armagh | ||||
| Fairview House | 25 | 49 | 18 | Fermanagh | ||||
| Fairview House | 34 | 51 | 20 | Down | ||||
| Fairview House | 81 | 86 | 13 | Derry | ||||
| Fairview Villa | 93 | 80 | 14 | Derry | ||||
| Fairy Bridge | 80 | 76 | 13 | Tyrone | ||||
| Fairy Hill | 33 | 64 | 18 | Tyrone | ||||
| Fairy Hill | 58 | 68 | 18 | Tyrone | ||||
| Fairy Steps | 59 | 60 | 21 | Down | ||||
| Fairy Water | 25 | 78 | 12 | Tyrone | ||||
| Fairy Water | 31 | 78 | 12 | Tyrone | ||||
| Fairy Water | 39 | 76 | 12 | Tyrone | ||||
| Fairy Water | 42 | 73 | Old | Cappagh | Tyrone | |||
| Falabane | 5 | 14 | 6 | Gartan | Donegal | T | ||
| Faladreen | 66 | 42 | 4 | Donegal | ||||
| Falgarrow | 97 | 97 | 6 | Kilteevoge | Donegal | T | ||
| Falgortrevy | 83 | 99 | 13 | Maghera | Derry | T | ||
| Falinlea | 22 | 22 | 9 | Antrim | ||||
| Falkland | 79 | 66 | 19 | Tyrone | ||||
| Fall Brae, The | 56 | 64 | 18 | Tyrone | ||||
| Fall Burn | 15 | 15 | 9 | Antrim | ||||
| Fall Point | 19 | 43 | 5 | Antrim | ||||
| Fallagh Lower | 53 | 84 | 13 | Bodoney Lower | Tyrone | T | ||
| Fallagh Middle | 54 | 83 | 13 | Bodoney Lower | Tyrone | T | ||
| Fallagh Upper | 55 | 83 | 13 | Bodoney Lower | Tyrone | T | ||
| Fallagharin Lough | 49 | 84 | 13 | Tyrone | ||||
| Fallaghearn | 42 | 64 | 18 | Donacavey | Tyrone | T | ||
| Fallaghearn | 60 | 63 | x | Errigal Keerogue | Tyrone | T | ||
| Fallagloon | 80 | 0 | 8 | Maghera | Derry | T | ||
| Fallagloon Bridge | 78 | 3 | 8 | Maghera | Derry | |||
| Fallagloon Burn | 81 | 1 | 8 | Maghera | Derry | |||
| Fallahogy | x | Kilrea | Derry | T | ||||
| Fallard | 18 | 15 | 6 | Calhame | Conwal | Donegal | T | |
| Fallgarrive | 0 | 40 | 5 | Antrim | ||||
| Fallgarrive | 99 | 40 | 4 | Antrim | ||||
| Fallmore | 28 | 14 | 9 | Antrim | ||||
| Falloward | 51 | 17 | 7 | Faughanvale | Derry | T | ||
| Fallowlea | 51 | 19 | 7 | Derry | ||||
| Falls | 32 | 74 | 15 | Antrim | ||||
| Falls | 34 | 43 | 18 | Fermanagh | ||||
| Falls Park | 30 | 72 | 15 | Antrim | ||||
| Falltaggart | 4 | 41 | 5 | Antrim | ||||
| Fallylea | 82 | 1 | x | Killelagh | Derry | T | ||
| Fallylea Bridge | 82 | 1 | 8 | Killelagh | Derry | |||
| Falmacrilly | 19 | 29 | 5 | Antrim | ||||
| Falskey | 30 | 53 | 18 | Tyrone | ||||
| Falskey | 40 | 71 | 12 | Tyrone | ||||
| Fannery | 86 | 28 | 4 | Derry | ||||
| Fannery | 86 | 28 | 8 | Derry | ||||
| Fanny Wylie's Bridge | 44 | 22 | 7 | Derry | ||||
| Fanny, Lough | 35 | 82 | 12 | Tyrone | ||||
| Far Craiglee Rocks | 59 | 58 | 21 | Down | ||||
| Far Crossan | 30 | 59 | 18 | Tyrone | ||||
| Far Hills | 34 | 86 | 12 | Tyrone | ||||
| Far Lough | 81 | 66 | 19 | Tullyniskan | Tyrone | T | ||
| Fardross | 52 | 49 | 18 | Tyrone | ||||
| Fardross Bridge | 51 | 50 | 18 | Tyrone | ||||
| Fardross Demesne | 51 | 46 | x | Clogher | Tyrone | T | ||
| Fardross Forest | 51 | 47 | 18 | Tyrone | ||||
| Fardross Forest | 54 | 49 | 18 | Tyrone | ||||
| Fardross Forest | 56 | 46 | 18 | Tyrone | ||||
| Fardross Mountain | 51 | 46 | 18 | Clogher | Tyrone | T | ||
| Farganlack Point | 10 | 52 | 5 | Lack Point | Antrim | |||
| Farkland | 61 | 11 | 7 | Bovevagh | Derry | T | ||
| Farland Point | 33 | 22 | 6 | Donegal | ||||
| Farland Point | 33 | 22 | 7 | Donegal | ||||
| Farleys Hill | 87 | 85 | 14 | Derry | ||||
| Farleystown | 95 | 54 | 19 | Armagh | ||||
| Farlough | 9 | 94 | 14 | Drummaul | Antrim | T | ||
| Farlough Lodge | 81 | 67 | 19 | Tyrone | ||||
| Farlow | 65 | 24 | 4 | Tamlaght Finlagan | Derry | T | ||
| Farlow | 65 | 24 | 7 | Tamlaght Finlagan | Derry | T | ||
| Farm Hill | 79 | 21 | 4 | Derry | ||||
| Farm Hill | 79 | 21 | 8 | Derry | ||||
| Farm Hill | 87 | 80 | 14 | Derry | ||||
| Farm Hill | 91 | 91 | 14 | Derry | ||||
| Farm Lodge | 10 | 57 | 20 | Down | ||||
| Farm Upper | 21 | 94 | 12 | Donegal | ||||
| Farmacaffly | 87 | 42 | 19 | Armagh | ||||
| Farmhill | 29 | 69 | 15 | Antrim | ||||
| Farmhill | 29 | 69 | 20 | Antrim | ||||
| Farmhill | 87 | 32 | 4 | Derry | ||||
| Farmhill | 88 | 16 | 8 | Derry | ||||
| Farnagh | 26 | 20 | 6 | Aughnish | Donegal | T | ||
| Farnoge Burn | 4 | 7 | 6 | Donegal | ||||
| Farragans | 5 | 88 | 12 | Donegal | ||||
| Farragans | 14 | 4 | 6 | Convoy | Donegal | T | ||
| Farragans | 31 | 25 | 7 | Donegal | ||||
| Farranacushog | x | Dunaghy | Antrim | T | ||||
| Farranalessary | x | Ballymoney | Antrim | T | ||||
| Farranetra | 55 | 53 | x | Clogher | Tyrone | T | ||
| Farranfad | 42 | 42 | 21 | Loughinisland | Down | T | ||
| Farranfad House | 42 | 42 | 21 | Down | ||||
| Farranflugh | 12 | 91 | 14 | Antrim | ||||
| Farranlester | x | Dunboe | Derry | T | ||||
| Farranlester | x | Mascosquin | Derry | T | ||||
| Farranmacallan | 14 | 38 | x | Culfeightrin | Antrim | T | ||
| Farranmacarter | 14 | 38 | 5 | Culfeightrin | Antrim | T | ||
| Farrannasaggart | 61 | 71 | 13 | Tyrone | ||||
| Farranseer | x | Mascosquin | Derry | T | ||||
| Farranshane | x | Antrim | Antrim | T | ||||
| Farrantemple Fort | 82 | 14 | 8 | Errigal | Derry | |||
| Farrantemple Glebe | 82 | 14 | x | Errigal | Derry | T | ||
| Farrest | 44 | 79 | 12 | Cappagh | Tyrone | T | ||
| Farriter | 69 | 59 | x | Killeeshil | Tyrone | T | ||
| Farrs Bay | 8 | 86 | 14 | Antrim | ||||
| Farscallop | 99 | 17 | 6 | Donegal | ||||
| Farsetmore | 20 | 12 | 6 | Leck | Donegal | T | ||
| Farsnagh | 96 | 74 | x | Arboe | Tyrone | T | ||
| Farsnagh Point | 96 | 74 | 14 | Tyrone | ||||
| Fartagh | 22 | 69 | 18 | Fermanagh | ||||
| Fartown | 26 | 7 | 9 | Antrim | ||||
| Fasagh | 0 | 19 | 8 | Antrim | ||||
| Fasglashagh | 69 | 61 | x | Killeeshil | Tyrone | T | ||
| Fassagh | 49 | 16 | 7 | Derry | ||||
| Faughan Bridge | 49 | 20 | 7 | Derry | ||||
| Faughan River | 62 | 99 | 13 | Derry | ||||
| Faughan, River | 47 | 16 | 7 | Derry | ||||
| Faughan, River | 50 | 9 | 7 | Derry | ||||
| Faughan, River | 57 | 4 | 7 | Derry | ||||
| Faughanvale | 57 | 21 | x | Faughanvale | Derry | T | ||
| Faughanvale Bridge | 57 | 21 | 7 | Faughanvale | Derry | |||
| Faughanvale River | 57 | 20 | 7 | Faughanvale | Derry | |||
| Favour Royal Demesne | 60 | 51 | x | Errigal Trough | Tyrone | T | ||
| Favour Royal Forest | 60 | 51 | 19 | Errigal Keerogue | Tyrone | |||
| Fawans | 11 | 23 | 6 | Kilmarenan | Donegal | T | ||
| Fawney | 45 | 5 | 7 | Donaghedy | Tyrone | T | ||
| Fawney | 48 | 13 | 7 | Cumber Lower | Derry | T | ||
| Fawns Bridge | 11 | 23 | 6 | Donegal | ||||
| Fawonnan Burn | 61 | 90 | 13 | Tyrone | ||||
| Fea Lough | 75 | 86 | 13 | Tyrone | ||||
| Fea Wood, Lough | 75 | 86 | 13 | Tyrone | ||||
| Feagh | 90 | 72 | x | Arboe | Tyrone | T | ||
| Fearn | 28 | 90 | 12 | Urney | Donegal | T | ||
| Fearn Hill | 28 | 89 | 12 | Urney | Donegal | |||
| Feckarry | 51 | 77 | 13 | Faccary | Cappagh | Tyrone | T | |
| Fedany | 22 | 46 | 20 | Down | T | |||
| Feddan | 29 | 46 | 18 | Fermanagh | ||||
| Feddan | 61 | 56 | x | Errigal Keerogue | Tyrone | T | ||
| Feddanranny | 22 | 23 | 9 | Antrim | ||||
| Feddyglass | 29 | 3 | 6 | Taughboyne | Donegal | T | ||
| Feegarran | 77 | 82 | 13 | Derryloran | Tyrone | T | ||
| Feegarran | 77 | 82 | 13 | Lissan | Tyrone | T | ||
| Feehary Island | 52 | 60 | 21 | Down | ||||
| Feenan | 43 | 62 | 18 | Donacavey | Tyrone | T | ||
| Feenan More (& Beg) | 84 | 83 | 13 | Desertlyn | Derry | T | ||
| Feeny | 62 | 5 | 7 | Banagher | Derry | T | ||
| Feeny Upper | 62 | 5 | 7 | Banagher | Derry | |||
| Feglish | 27 | 59 | 18 | Kilskeery | Tyrone | T | ||
| Feglish House | 27 | 58 | 18 | Tyrone | ||||
| Feigh Bridge | 98 | 43 | 5 | Billy | Antrim | |||
| Feigh Bridge | 98 | 44 | 4 | Billy | Antrim | |||
| Feigh Carrick | 98 | 44 | x | Billy | Antrim | T | ||
| Feigh Lower | 98 | 44 | 4 | Billy | Antrim | |||
| Feigh Lower | 98 | 44 | 5 | Billy | Antrim | |||
| Feigh Mountain | 98 | 44 | x | Billy | Antrim | T | ||
| Feighatan Burn | 64 | 92 | 13 | Tyrone | ||||
| Fellows Hall | 79 | 42 | 19 | Armagh | ||||
| Fenagh | 7 | 7 | x | Craigs | Antrim | T | ||
| Fenagh Hillhead | 7 | 7 | 8 | Craigs | Antrim | |||
| Fenaghy | x | Craigs | Antrim | T | ||||
| Feney | 14 | 59 | 20 | Down | T | |||
| Fergaug Burn | 13 | 11 | 6 | Donegal | ||||
| Ferguson's Cross | 42 | 59 | 21 | Down | ||||
| Ferguson's Land | 13 | 89 | x | Donegore | Antrim | T | ||
| Fergusons Bridge | 30 | 64 | 20 | Down | ||||
| Fergusons Water | 13 | 89 | 14 | Donegore | Antrim | |||
| Fern, Lough | 17 | 23 | 6 | Donegal | ||||
| Fernagh | 52 | 75 | 13 | Ferneagh Fearnagh | Cappagh | Tyrone | T | |
| Fernaghandrum | 51 | 60 | 18 | Clogher | Tyrone | T | ||
| Fernagreevagh | 92 | 54 | 19 | Armagh | ||||
| Fernamenagh | 58 | 58 | 18 | Errigal Keerogue | Tyrone | T | ||
| Ferney | 27 | 61 | 18 | Kilskeery | Tyrone | T | ||
| Ferney Hill | 41 | 44 | 18 | Fermanagh | ||||
| Ferney House | 26 | 51 | 18 | Fermanagh | ||||
| Fernisky | 13 | 95 | 14 | Connor | Antrim | T | ||
| Fernisky | 13 | 95 | 9 | Connor | Antrim | T | ||
| Ferny Island | 21 | 49 | 18 | Fermanagh | ||||
| Feroy | 78 | 67 | 19 | Donaghmore | Tyrone | T | ||
| Ferris Point | 41 | 2 | 9 | Antrim | ||||
| Ferry House | 37 | 10 | 7 | Tyrone | ||||
| Ferry Terminal | 36 | 78 | 15 | Antrim | ||||
| Ferryquarter | 59 | 49 | x | Ballyculter | Down | T | ||
| Ferrystown | 96 | 7 | 8 | Antrim | ||||
| Feumore | 10 | 70 | 14 | Glenavy | Antrim | T | ||
| Feumore Point | 10 | 70 | 14 | Glenavy | Antrim | |||
| Feykeeran Burn | 16 | 33 | 5 | Antrim | ||||
| Feystown | 31 | 10 | 9 | Antrim | ||||
| Feystown Bridge | 31 | 9 | 9 | Antrim | ||||
| Feystown Burn | 30 | 9 | 9 | Antrim | ||||
| Field Resource Centre | 28 | 17 | 9 | Antrim | ||||
| Fifty Acres | 23 | 88 | 14 | Kilbride | Antrim | T | ||
| Figanny Bridge | 70 | 47 | 19 | Monaghan | ||||
| Figart | 23 | 1 | 6 | Raphoe | Donegal | T | ||
| Figary | 33 | 27 | 7 | Fahan Upper | Donegal | T | ||
| Filbert Hill | 25 | 43 | 18 | Fermanagh | ||||
| Finaghy | 30 | 70 | 15 | Antrim | ||||
| Finarrow Burn | 60 | 89 | 13 | Tyrone | ||||
| Fincarn | 47 | 15 | 7 | Clondermot | Derry | T | ||
| Fincarn | 64 | 3 | 7 | Banagher | Derry | T | ||
| Fincarn | 64 | 4 | 7 | Banagher | Derry | T | ||
| Fincarn Bridge | 64 | 5 | 7 | Banagher | Derry | |||
| Fincarn Glen | 47 | 15 | 7 | Derry | ||||
| Findermore | 51 | 50 | 18 | Clogher | Tyrone | T | ||
| Findermore Bridge | 51 | 50 | 18 | Tyrone | ||||
| Findrum | 21 | 0 | 6 | Convoy | Donegal | T | ||
| Findrum | 62 | 59 | 19 | Errigal Keerogue | Tyrone | T | ||
| Findrum Upper | 21 | 99 | 12 | Donegal | ||||
| Finelly | 80 | 56 | 19 | Clonfeacle | Tyrone | T | ||
| Fingerpost, The | 31 | 52 | 18 | Tyrone | ||||
| Fingers, The | 94 | 42 | 4 | Antrim | ||||
| Fingers, The | 94 | 42 | 5 | Antrim | ||||
| Finglen | 67 | 0 | 7 | Banagher | Derry | T | ||
| Finglen | 70 | 95 | 13 | Ballynascreen | Derry | T | ||
| Finglen River | 66 | 1 | 7 | Derry | ||||
| Finglush | 72 | 46 | 19 | Aghanloo | Tyrone | T | ||
| Fingrean, Lough | 57 | 77 | 13 | Tyrone | ||||
| Finkiltaghh | 0 | 6 | 8 | Portglenone | Antrim | T | ||
| Finn, River | 10 | 95 | 6 | Donegal | ||||
| Finn, River | 10 | 95 | 12 | Donegal | ||||
| Finn, River | 14 | 94 | 6 | Donegal | ||||
| Finn, River | 25 | 94 | 6 | Donegal | ||||
| Finn, River | 27 | 94 | 12 | Donegal | ||||
| Finn, River | 32 | 97 | 6 | Donegal | ||||
| Finn, River | 98 | 1 | 6 | Donegal | ||||
| Finnabrogue | 48 | 47 | x | Inch | Down | T | ||
| Finnabrogue | 49 | 47 | 21 | Inch | Down | T | ||
| Finnadork Glebe | 19 | 3 | 6 | Convoy | Donegal | T | ||
| Finnebrouge House | 48 | 47 | 21 | Down | ||||
| Finnebrougue Lough | 48 | 48 | 21 | Down | ||||
| Finnis | 27 | 45 | 20 | Down | T | |||
| Finnis | 28 | 47 | 20 | Down | ||||
| Fintona | 44 | 61 | 18 | Donacavey | Tyrone | T | White clearing/field | |
| Finulagh | 73 | 63 | 19 | Donaghmore | Tyrone | T | ||
| Finvey | 77 | 71 | x | Desertcreat | Tyrone | T | ||
| Finvey Bridge | 78 | 71 | 13 | Tyrone | ||||
| Finvoy | 95 | 18 | 8 | Antrim | ||||
| Finvoy Lodge | 95 | 16 | 8 | Antrim | ||||
| Finwell Hill | 31 | 20 | 6 | Donegal | ||||
| Finwell Hill | 31 | 20 | 7 | Donegal | ||||
| Finyan Point | 54 | 57 | 21 | Down | ||||
| Fir Grove | 31 | 99 | 12 | Donegal | ||||
| Fir Lodge | 11 | 64 | 20 | Antrim | ||||
| Fir Mountain | 74 | 85 | 13 | Tyrone | ||||
| Firary | 87 | 44 | 19 | Armagh | ||||
| Fire Tower | 48 | 40 | 18 | Fermanagh | ||||
| Fireagh | 43 | 70 | 12 | Tyrone | ||||
| Fireagh (Cockrane) | 42 | 70 | x | Drumragh | Tyrone | T | ||
| Fireagh (Gardiner) | 43 | 70 | x | Drumragh | Tyrone | T | ||
| Fireagh (Thompson) | 42 | 71 | x | Drumragh | Tyrone | T | ||
| Fireagh Lough | 43 | 69 | 18 | Tyrone | ||||
| Firfield | 11 | 78 | 14 | Antrim | ||||
| Firs, The | 91 | 81 | 14 | Derry | ||||
| Fish Farm | 22 | 21 | 9 | Antrim | ||||
| Fish Farm | 92 | 16 | 8 | Antrim | ||||
| Fish Loughan | 87 | 28 | 8 | Kildollagh | Derry | T | ||
| Fish Loughan | 88 | 28 | 4 | Kildollagh | Derry | T | ||
| Fish Quarter | 60 | 62 | 21 | Inishargy | Down | T | ||
| Fishers Hill | 81 | 43 | 19 | Armagh | ||||
| Five Acres | 98 | 33 | 4 | Billy | Antrim | T | ||
| Five Acres | 98 | 33 | 5 | Billy | Antrim | T | ||
| Five Corners | 27 | 93 | 15 | Antrim | ||||
| Five Loan Ends | 91 | 57 | 19 | Armagh | ||||
| Fivemiletown | 44 | 47 | 18 | Clogher | Tyrone | T | ||
| Flanders | x | Bovevagh | Derry | T | ||||
| Flat Field | 24 | 52 | 18 | Fermanagh | ||||
| Flat Point | 99 | 85 | 14 | Antrim | ||||
| Flat Rock, The | 55 | 66 | 15 | Down | ||||
| Flat Rock, The | 55 | 66 | 21 | Down | ||||
| Flat Rocks | 33 | 25 | 7 | Donegal | ||||
| Flatfield | 18 | 59 | 20 | Down | ||||
| Fleming Hall | 3 | 18 | 8 | Antrim | ||||
| Flemingstown | 21 | 3 | 6 | Raphoe | Donegal | T | ||
| Flemingstown | 21 | 92 | 14 | Antrim | ||||
| Flesk Bridge | 3 | 30 | 5 | Antrim | ||||
| Flesk Water | 3 | 29 | 5 | Antrim | ||||
| Flesk Water | 3 | 29 | 8 | Antrim | ||||
| Flisk Burn | 11 | 23 | 9 | Antrim | ||||
| Flood Lodge | 88 | 77 | 14 | Derry | ||||
| Florida Bridge | 46 | 60 | 21 | Down | ||||
| Florida Manor | 47 | 61 | 21 | Down | ||||
| Flow Bog | 11 | 93 | 14 | Antrim | ||||
| Flughery | 19 | 38 | 5 | Antrim | ||||
| Flughery Bridge | 20 | 38 | 5 | Antrim | ||||
| Flughery Burn | 19 | 38 | 5 | Antrim | ||||
| Flush | 6 | 14 | 8 | Antrim | ||||
| Flush Bridge | 94 | 52 | 19 | Armagh | ||||
| Flush Bridhge | 15 | 94 | 14 | Antrim | ||||
| Flush Hill | 94 | 52 | 19 | Armagh | ||||
| Flush River | 29 | 80 | 15 | Antrim | ||||
| Flush Town | 57 | 67 | 18 | Tyrone | ||||
| Flush, The | 2 | 2 | 8 | Antrim | ||||
| Flush, The | 28 | 79 | 15 | Antrim | ||||
| Flush, The | 84 | 74 | 13 | Tyrone | ||||
| Flush, The | 93 | 40 | 19 | Armagh | ||||
| Flushland | 97 | 30 | 4 | Antrim | ||||
| Flushland | 97 | 30 | 5 | Antrim | ||||
| Flushtown | 31 | 95 | 6 | Urney | Tyrone | T | ||
| Flushtown | 36 | 85 | 12 | Tyrone | T | |||
| Flushtown Bridge | 31 | 95 | 6 | Tyrone | ||||
| Flushtown Bridge | 31 | 95 | 12 | Urney | Tyrone | |||
| Flushtown Bridge | 34 | 8 | 6 | Donegal | ||||
| Flushtown Bridge | 34 | 8 | 7 | Donegal | ||||
| Fly Lough, The | 76 | 85 | 13 | Tyrone | ||||
| Foaran River | 30 | 24 | 9 | Antrim | ||||
| Fogart | 51 | 55 | 18 | Clogher | Tyrone | T | ||
| Foggy Hill | 23 | 81 | 12 | Tyrone | ||||
| Foglish | 44 | 45 | 18 | Aghalurcher | Fermanagh | T | ||
| Folk Museum, Ulster | 42 | 80 | 15 | Down | ||||
| Folly Castle | 60 | 49 | 21 | Down | ||||
| Folly Hill | 16 | 41 | 20 | Down | ||||
| Folly Hill | 94 | 97 | 14 | Derry | ||||
| Fomel Bridge | 61 | 80 | 13 | Tyrone | ||||
| Fool's Penny | 53 | 53 | 21 | Down | ||||
| Foorbridge | 13 | 94 | 6 | Donegal | ||||
| Footbridge | 5 | 97 | 6 | Donegal | ||||
| Fords | 41 | 37 | 21 | Down | ||||
| Fore Glen, The | 58 | 9 | 7 | Derry | ||||
| Foreglen River | 57 | 9 | 7 | Derry | ||||
| Foreland Point | 58 | 81 | 15 | Down | ||||
| Foremass | 57 | 66 | 18 | Errigal Keerogue | Tyrone | |||
| Foremass Lower | 57 | 66 | x | Errigal Keerogue | Tyrone | T | ||
| Foremass Upper | 58 | 65 | x | Errigal Keerogue | Tyrone | T | ||
| Forest Nursey | 21 | 95 | 12 | Donegal | ||||
| Forest, The | 15 | 58 | 20 | Down | ||||
| Forge Bridge | 13 | 58 | 20 | Down | ||||
| Forge Bridge | 80 | 97 | 13 | Derry | ||||
| Fork Bridge | 22 | 10 | 9 | Antrim | ||||
| Forkens | 31 | 87 | 15 | Antrim | ||||
| Forking Bridge | 30 | 10 | 9 | Antrim | ||||
| Forkings Burn | 18 | 14 | 9 | Antrim | ||||
| Formil | 62 | 82 | 13 | Bodoney Lower | Tyrone | T | ||
| Formil | 75 | 11 | 8 | Bovevagh | Derry | T | ||
| Formil Bridge | 77 | 11 | 8 | Bovevagh | Derry | |||
| Formil Hill | 76 | 10 | 8 | Bovevagh | Derry | |||
| Formil River | 76 | 10 | 8 | Bovevagh | Derry | |||
| Formil Rock | 62 | 82 | 13 | Tyrone | ||||
| Formoyle | 77 | 28 | 4 | Formoyle | Derry | T | ||
| Formoyle | 77 | 28 | 8 | Formoyle | Derry | |||
| Formoyle Hill | 76 | 28 | 4 | Formoyle | Derry | |||
| Formoyle Hill | 76 | 28 | 8 | Formoyle | Derry | |||
| Formullen | 77 | 30 | 4 | Formoyle | Derry | T | ||
| Forster's Mountain | 33 | 82 | 12 | Tyrone | ||||
| Fort | 85 | 55 | 19 | Armagh | ||||
| Fort Bridge | 46 | 90 | 13 | Tyrone | ||||
| Fort Edward | 71 | 59 | 19 | Tyrone | ||||
| Fort Farm | 6 | 98 | 14 | Antrim | ||||
| Fort Farm | 95 | 27 | 4 | Antrim | ||||
| Fort Farm | 95 | 27 | 5 | Antrim | ||||
| Fort Farm | 95 | 27 | 8 | Antrim | ||||
| Fort Hill | 4 | 24 | 8 | Antrim | ||||
| Fort Hill | 5 | 9 | 8 | Antrim | ||||
| Fort Hill | 12 | 98 | 14 | Antrim | ||||
| Fort Hill | 12 | 98 | 9 | Antrim | ||||
| Fort Hill | 20 | 56 | 20 | Down | ||||
| Fort Hill | 38 | 45 | 18 | Fermanagh | ||||
| Fort Hill | 40 | 44 | 18 | Fermanagh | ||||
| Fort Hill | 40 | 57 | 21 | Down | ||||
| Fort Hill | 45 | 93 | 15 | Antrim | ||||
| Fort Hill | 46 | 57 | 18 | Tyrone | ||||
| Fort Hill | 49 | 43 | 18 | Tyrone | ||||
| Fort Hill | 49 | 48 | 21 | Down | ||||
| Fort Hill | 63 | 61 | 21 | Down | ||||
| Fort Hill | 90 | 85 | 14 | Derry | ||||
| Fort Hill | 92 | 7 | 8 | Derry | ||||
| Fort House | 65 | 19 | 7 | Derry | ||||
| Fort Town | 16 | 9 | 9 | Antrim | ||||
| Fort Town | 23 | 79 | 12 | Tyrone | T | |||
| Fort Town | 31 | 93 | x | Urney | Tyrone | T | ||
| Fort Town | 92 | 29 | 4 | Ballymoney | Antrim | T | ||
| Fort Town | 92 | 29 | 5 | Ballymoney | Antrim | T | ||
| Fort Town | 92 | 29 | 8 | Ballymoney | Antrim | T | ||
| Fort View | 39 | 57 | 20 | Down | ||||
| Fort View | 82 | 74 | 13 | Tyrone | ||||
| Fort View | 82 | 83 | 13 | Derry | ||||
| Fort View Lodge | 71 | 19 | 8 | Derry | ||||
| Fort William | 83 | 97 | 13 | Derry | ||||
| Fort, The | 20 | 44 | 20 | Down | ||||
| Fort, The | 43 | 60 | 21 | Down | ||||
| Fort, The | 88 | 96 | 14 | Derry | ||||
| Forth River | 28 | 76 | 15 | Antrim | ||||
| Forthill | 17 | 95 | 14 | Connor | Antrim | T | ||
| Forthill | 17 | 95 | 9 | Connor | Antrim | T | ||
| Forthill | 23 | 93 | 12 | Donegal | ||||
| Forthill | 38 | 48 | 20 | Down | ||||
| Forthill | 45 | 93 | x | Templecorran | Antrim | T | ||
| Forthill | 54 | 71 | 13 | Tyrone | ||||
| Forthill | 86 | 79 | 14 | Derry | ||||
| Fortstewart | 27 | 20 | 6 | Aughnish | Donegal | T | ||
| Forttown | 8 | 11 | 8 | Antrim | ||||
| Fortview | 12 | 42 | 20 | Down | ||||
| Fortview | 31 | 56 | 20 | Down | ||||
| Fortwilliam | 33 | 77 | 15 | Antrim | ||||
| Fortwilliam Bridge | 84 | 97 | 13 | Derry | ||||
| Forty Acres | 8 | 53 | 20 | Down | ||||
| Foundry | 11 | 99 | 14 | Antrim | ||||
| Four Bushes, The | 91 | 16 | 8 | Derry | ||||
| Four Corners | 45 | 0 | 9 | Antrim | ||||
| Four Mile Burn | 22 | 89 | 14 | Antrim | ||||
| Four Mile Burn | 24 | 87 | 14 | Antrim | ||||
| Four Winds | 6 | 8 | 8 | Antrim | ||||
| Four Winds | 35 | 69 | 15 | Down | ||||
| Four Winds | 35 | 69 | 20 | Down | ||||
| Fourscore | 18 | 73 | 14 | Antrim | ||||
| Fourtowns Hill | 2 | 91 | 14 | Antrim | ||||
| Fowl Bridge | 38 | 98 | 12 | Tyrone | ||||
| Fowl Glen Burn | 39 | 98 | 12 | Tyrone | ||||
| Fox Fort | 25 | 58 | 20 | Down | ||||
| Fox Hill | 30 | 49 | 18 | Fermanagh | ||||
| Fox Hill | 51 | 43 | 21 | Down | ||||
| Fox Park | 52 | 73 | 13 | Tyrone | ||||
| Fox's Hill | 69 | 71 | 13 | Tyrone | ||||
| Foxes Hill | 37 | 44 | 18 | Fermanagh | ||||
| Foxfield | 23 | 95 | 12 | Donegal | ||||
| Foxhall | 10 | 10 | 6 | Conwal | Donegal | T | ||
| Foxhill Lough | 30 | 49 | 18 | Fermanagh | ||||
| Foy Mount | 97 | 57 | 19 | Armagh | ||||
| Foyarr House | 77 | 46 | 19 | Armagh | ||||
| Foydragh | 36 | 43 | 18 | Fermanagh | ||||
| Foyfin | 27 | 93 | 12 | Urney | Donegal | T | ||
| Foygh | 74 | 64 | 19 | Donaghmore | Tyrone | T | ||
| Foyle Bridge | 33 | 98 | 12 | Tyrone | ||||
| Foyle Bridge | 45 | 19 | 7 | Derry | ||||
| Foyle Park | 52 | 19 | 7 | Derry | ||||
| Foyle View | 61 | 23 | 4 | Derry | ||||
| Foyle View | 61 | 23 | 7 | Derry | ||||
| Foyle View | 70 | 23 | 4 | Derry | ||||
| Foyle View | 70 | 23 | 8 | Derry | ||||
| Foyle, Lough | 54 | 27 | 7 | Derry | ||||
| Foyle, Lough | 61 | 33 | 4 | Derry | ||||
| Foyle, River | 34 | 0 | 6 | Donegal | ||||
| Foyle, River | 34 | 0 | 7 | Donegal | ||||
| Foyle, River | 34 | 99 | 12 | Donegal | ||||
| Foyle, River | 35 | 6 | 6 | Donegal | ||||
| Foyle, River | 39 | 11 | 7 | Derry | ||||
| Foyleside | 36 | 7 | 7 | Tyrone | ||||
| Franciscan Cross | 34 | 43 | 20 | Down | ||||
| Freaghdoo | 51 | 85 | 13 | Tyrone | ||||
| Freehall | 69 | 27 | 4 | Moneyvennon | Aghanloo | Derry | T | |
| Freehall | 69 | 27 | 7 | Moneyvennon | Aghanloo | Derry | T | |
| Freehall Dunlop | x | Dunboe | Derry | T | ||||
| Freemanstown | 22 | 89 | 14 | Donegore | Antrim | T | ||
| Freestone Hall | 31 | 53 | 20 | Down | ||||
| French Park | 38 | 90 | 15 | Antrim | ||||
| Freugh | 77 | 19 | 8 | Errigal | Derry | T | ||
| Freughlough | 25 | 87 | 12 | Urney | Tyrone | T | ||
| Freughmore | 46 | 67 | 18 | Drumragh | Tyrone | T | ||
| Freughmore | 47 | 62 | 18 | Donacavey | Tyrone | T | ||
| Freughmore | 52 | 50 | 18 | Clogher | Tyrone | T | ||
| Friars Glen | 13 | 64 | 20 | Antrim | ||||
| Friars Rock | 73 | 84 | 13 | Tyrone | ||||
| Friars' Leap | 22 | 46 | 18 | Fermanagh | ||||
| Friary | 6 | 27 | 5 | Loughguile | Antrim | T | ||
| Friary | 6 | 27 | 8 | Loughguile | Antrim | T | ||
| Friary | 12 | 40 | 5 | Antrim | ||||
| Friary | 14 | 20 | 6 | Donegal | ||||
| Friary | 25 | 14 | 6 | Donegal | ||||
| Friary | 49 | 73 | 15 | Down | ||||
| Friary Lough | 75 | 55 | 19 | Tyrone | ||||
| Frielstown | 9 | 50 | 20 | Down | ||||
| Frolic | 1 | 13 | 8 | Antrim | ||||
| Frolic Point | 9 | 74 | 14 | Antrim | ||||
| Frondraght | 31 | 98 | 12 | Donegal | ||||
| Frosses | 6 | 15 | x | Grange of Dundermot | Antrim | T | ||
| Frosses, Big | 6 | 15 | 8 | Grange of Dundermot | Antrim | |||
| Fruirfield House | 93 | 49 | 19 | Armagh | ||||
| Fruit Hill | 14 | 70 | 14 | Antrim | ||||
| Fruit Hill | 24 | 60 | 20 | Down | ||||
| Fruit Hill | 34 | 58 | 20 | Down | ||||
| Fruit Hill | 69 | 23 | 4 | Drenagh | Finlagan | Derry | T | |
| Fruit Hill | 69 | 23 | 7 | Drenagh | Finlagan | Derry | T | |
| Fruit Hill | 91 | 50 | 19 | Armagh | ||||
| Fruit Vale | 15 | 70 | 14 | Antrim | ||||
| Fruit Vale | 27 | 57 | 20 | Down | ||||
| Fruithill | x | Drumachose | Derry | T | ||||
| Fruitvale | 11 | 63 | 20 | Antrim | ||||
| Fruitvale | 12 | 69 | 20 | Antrim | ||||
| Fruitvale | 14 | 75 | 14 | Antrim | ||||
| Frys Bridge | 30 | 43 | 20 | Down | ||||
| Fueyhapple | 9 | 82 | 12 | Tyrone | ||||
| Fueyhapple Burn | 9 | 82 | 12 | Tyrone | ||||
| Fullagh | 60 | 62 | 19 | Tyrone | ||||
| Furnace Bridge | 93 | 83 | 14 | Derry | ||||
| Furnish | 42 | 49 | 18 | Fermanagh | ||||
| Fury River | 56 | 46 | 18 | Tyrone | ||||
| Furze Cottage | 98 | 31 | 4 | Antrim | ||||
| Furze Cottage | 98 | 31 | 5 | Antrim | ||||
| Fycorranagh | 19 | 9 | x | Leck | Donegal | T | ||
| Fyfin | 30 | 86 | 12 | Ardstraw | Tyrone | |||
| Fyfin | 41 | 99 | 12 | Leckpatrick | Tyrone | T | ||
| Fymore | 59 | 52 | 18 | Errigal Trough | Tyrone | |||
| Fymore Lough | 59 | 51 | 18 | Errigal Trough | Tyrone | |||
| Fymore Moutray | 59 | 51 | x | Errigal Trough | Tyrone | T |