| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ferrybank | city | Cill Chainnigh | Ireland | 52.2644444 | -7.1077778 | 85 | 3915 |
| Fiddaun Bridge | city | Cill Chainnigh | Ireland | 52.5122222 | -7.0308333 | 498 | 3315 |
| Fiddown | city | Cill Chainnigh | Ireland | 52.33 | -7.3155556 | 29 | 4022 |
| Fiodh Duin | city | Cill Chainnigh | Ireland | 52.33 | -7.3155556 | 29 | 4022 |
| Fiodh Dúin | city | Cill Chainnigh | Ireland | 52.33 | -7.3155556 | 29 | 4022 |
| Firoda Lower | city | Cill Chainnigh | Ireland | 52.8175 | -7.2513889 | 583 | 3244 |
| Foyle Bridge | city | Cill Chainnigh | Ireland | 52.7616667 | -7.4536111 | 498 | 3173 |
| Freneystown | city | Cill Chainnigh | Ireland | 52.6825 | -7.1177778 | 501 | 3393 |
| Freshford | city | Cill Chainnigh | Ireland | 52.7341667 | -7.3988889 | 360 | 3300 |
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