Ff
| Location | Locality | Coordinates (links to map & photo sources) |
OS grid reference |
| Ffairfach | Carmarthenshire | 51.87° N 04.00° W | SN6221 |
| Ffair-Rhos | Ceredigion | 52.29° N 03.84° W | SN7468 |
| Ffaldybrenin | Carmarthenshire | 52.07° N 04.00° W | SN6344 |
| Ffarmers | Carmarthenshire | 52.07° N 03.97° W | SN6544 |
| Ffawyddog | Powys | 51.85° N 03.16° W | SO2018 |
| Ffestiniog | Gwynedd | 52.95° N 03.93° W | SH7041 |
| Fforddlas | Powys | 52.03° N 03.16° W | SO2038 |
| Ffordd-las | Denbighshire | 53.16° N 03.31° W | SJ1264 |
| Ffordd-y-Gyfraith | Bridgend | 51.54° N 03.64° W | SS8684 |
| Fforest | Carmarthenshire | 51.71° N 04.05° W | SN5804 |
| Fforest-fach | Swansea | 51.63° N 03.99° W | SS6295 |
| Fforest Goch | Neath Port Talbot | 51.69° N 03.82° W | SN7401 |
| Ffostrasol | Ceredigion | 52.09° N 04.38° W | SN3747 |
| Ffos-y-ffin | Ceredigion | 52.21° N 04.28° W | SN4460 |
| Ffos-y-fran | Merthyr Tydfil | 51.73° N 03.36° W | SO0605 |
| Ffos-y-go | Wrexham | 53.07° N 03.04° W | SJ3054 |
| Ffridd | Powys | 52.54° N 03.25° W | SO1595 |
| Ffrith | Wrexham | 53.08° N 03.07° W | SJ2855 |
| Ffynnon | Carmarthenshire | 51.81° N 04.39° W | SN3516 |
| Ffynnon-ddrain | Carmarthenshire | 51.86° N 04.32° W | SN4021 |
| Ffynnon Gron | Pembrokeshire | 51.89° N 05.05° W | SM9026 |
| Ffynnongroyw | Flintshire | 53.32° N 03.30° W | SJ1382 |
| Ffynnon Gynydd | Powys | 52.06° N 03.22° W | SO1641 |
Read more about this topic: List Of United Kingdom Locations: Ff-Fn