Wales
U
- Uchaf Corris
- Uchaf, Trevor
- Ucheldre, Wales
- Ucheldre, Powys
- Undy
- Union Buildings
- Uplands, Neath Port Talbot
- Uplands, Powys
- Uplands, Swansea
- Upper Abercanaid
- Upper Bangor
- Upper Boat
- Upper Borth
- Upper Brynamman
- Upper Chapel
- Upper Church Village
- Upper Coedcae
- Upper Cwm-Twrch, Wales
- Upper Cwm-Twrch, Powys
- Upper Cwmbran
- Upper Cwmgwyn
- Upper Fedw
- Upper Forge, Swansea
- Upper Garth Road
- Upper Grange
- Upper Green, Powys
- Upper Killay
- Upper Llandwrog
- Upper Nash
- Upper Ochrwyth
- Upper Pentre-Bach
- Upper Race
- Upper Redbrook
- Upper Solva
- Upper Trelyn
- Upton, Pembrokeshire
- Usk
- Uskmouth
- Uwchafon
- Uwchlawr-Coed
- Uwchmynydd
- Uwchydre
- Uwchygarreg
- Uzmaston