Begrebet Llanfair (som i Walisisk står for Santa Maria kirke) kan henvise til følgende lokaliteter i Wales:
UK
- Llanfair, amtsby i Ceredigion
- Llanfair, amtsby i Gwynedd
- Llanfair, landsbyen Vale of Glamorgan County District
- Llanfair-ar-y-bryn, amtsby i Carmarthenshire
- Llanfair Caereinion, amtsby i Powys
- Llanfair Clydogau, amtsby i Ceredigion
- Llanfair Dyffryn Clwyd, amtsby i Denbighshire (Wales, UK)
- Llanfair-er-gaer, amtsby i Gwynedd
- Llanfairfechan, Kommune i distriktet Conwy
- Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch, Amt i Anglesey
- Llanfair Talhaearn, landsby i distriktet Conwy
- Llanfair-ym-Muallt (Builth Wells i engelsk), Amtskommune i Powys
- Llanfair-yng-Nghornwy, amtsby i Anglesey
- Llanfair yn Neubwll, amtsby i Anglesey