| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Fodry | city | An Clar | Ireland | 52.575 | -9.8911111 | 3 | 400 |
| Foghill | city | Maigh Eo | Ireland | 54.2597222 | -9.2491667 | 13 | 802 |
| Foherlagh | city | Corcaigh | Ireland | 51.5719444 | -9.3580556 | 249 | 5130 |
| Foiladaun | city | Corcaigh | Ireland | 52.2594444 | -9.1594444 | 994 | 5187 |
| Foilakill | city | Corcaigh | Ireland | 51.6313889 | -9.6502778 | 328 | 2446 |
| Foilmore Bridge | city | Ciarrai | Ireland | 51.9755556 | -10.1502778 | 246 | 2065 |
| Foley's Cross Roads | city | County Limerick | Ireland | 52.4016667 | -8.5272222 | 324 | 5492 |
| Foleyʼs Cross Roads | city | County Limerick | Ireland | 52.4016667 | -8.5272222 | 324 | 5492 |
| Fontstown | city | Cill Dara | Ireland | 53.05 | -6.8927778 | 331 | 7189 |
| Ford | city | Loch Garman | Ireland | 52.5119444 | -6.2802778 | 29 | 3082 |
| Ford Bridge | city | Cill Dara | Ireland | 53.2755556 | -6.8594444 | 291 | 7152 |
| Fore | city | An Iarmhi | Ireland | 53.6769444 | -7.2236111 | 479 | 3364 |
| Forenaghts | city | Cill Dara | Ireland | 53.2244444 | -6.6105556 | 495 | 7214 |
| Forest Bridge | city | Laois | Ireland | 52.9741667 | -7.4733333 | 337 | 2780 |
| Forest Upper | city | Laois | Ireland | 53.1475 | -7.3572222 | 347 | 2751 |
| Formoyle | city | Maigh Eo | Ireland | 54.1380556 | -9.4563889 | 272 | 1793 |
| Formoyle | city | Sligeach | Ireland | 54.2938889 | -8.3711111 | 449 | 1891 |
| Formoyle | city | | Ireland | 53.6166667 | -7.8333333 | 246 | 2501 |
| Fornaght | city | Corcaigh | Ireland | 51.9822222 | -8.6944444 | 492 | 5205 |
| Forrest Great | city | Baile Atha Cliath | Ireland | 53.4419444 | -6.2630556 | 98 | 102671 |
| Fort Arthur | city | Corcaigh | Ireland | 51.675 | -8.5763889 | 262 | 4229 |
| Fort Bridge | city | Baile Atha Cliath | Ireland | 53.2597222 | -6.3688889 | 587 | 100549 |
| Fort Cross Roads | city | Corcaigh | Ireland | 51.8352778 | -8.4933333 | 219 | 5219 |
| Fort Middle | city | County Limerick | Ireland | 52.3911111 | -8.7558333 | 249 | 5383 |
| Fort Prospect | city | Corcaigh | Ireland | 51.6388889 | -8.8397222 | 249 | 4845 |
| Fort Stewart | city | County Donegal | Ireland | 55.0191667 | -7.5927778 | 0 | 1532 |
| Fort Stewart House | city | County Donegal | Ireland | 55.0191667 | -7.5927778 | 0 | 1532 |
| Fort William | city | Corcaigh | Ireland | 51.8247222 | -8.6561111 | 331 | 5223 |
| Fort William | city | Corcaigh | Ireland | 52.2011111 | -8.6069444 | 295 | 5178 |
| Fortel | city | County Offaly | Ireland | 53.0772222 | -7.8322222 | 324 | 2668 |
| Fossy | city | Laois | Ireland | 52.9477778 | -7.1888889 | 498 | 2811 |
| Foulkesmill | city | Loch Garman | Ireland | 52.3108333 | -6.7505556 | 85 | 4023 |
| Foulkesmills | city | Loch Garman | Ireland | 52.3108333 | -6.7505556 | 85 | 4023 |
| Fountain Cross | city | An Clar | Ireland | 52.8722222 | -9.0291667 | 170 | 2510 |
| Four Cross Roads | city | Tiobraid Arann | Ireland | 52.5902778 | -7.665 | 498 | 2857 |
| Four Mile House | city | | Ireland | 53.7 | -8.2166667 | 249 | 1848 |
| Four Mile Water Bridge | city | Port Lairge | Ireland | 52.2736111 | -7.7588889 | 275 | 3877 |
| Fourcuil | city | Corcaigh | Ireland | 51.65 | -8.9 | 229 | 5027 |
| Fox and Geese | city | Baile Atha Cliath | Ireland | 53.3236111 | -6.3558333 | 203 | 103037 |
| Fox's Castle Bridge | city | Port Lairge | Ireland | 52.1552778 | -7.5038889 | 249 | 4120 |
| Foxfield | city | County Leitrim | Ireland | 54.0241667 | -7.8602778 | 223 | 1393 |
| Foxford | city | Maigh Eo | Ireland | 53.9833333 | -9.1166667 | 157 | 1806 |
| Foxhall | city | | Ireland | 53.5833333 | -9.0166667 | 334 | 2435 |
| Foxhill | city | Cill Dara | Ireland | 52.9927778 | -6.9425 | 242 | 6595 |
| Foxrock | city | Baile Atha Cliath | Ireland | 53.2666667 | -6.1741667 | 177 | 84907 |
| Foxʼs Castle Bridge | city | Port Lairge | Ireland | 52.1552778 | -7.5038889 | 249 | 4120 |
| Foygh | city | | Ireland | 53.6 | -7.8333333 | 236 | 2501 |
| Foyle Bridge | city | Cill Chainnigh | Ireland | 52.7616667 | -7.4536111 | 498 | 3173 |
| Foynes | city | County Limerick | Ireland | 52.6113889 | -9.1102778 | 196 | 4833 |
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