The term Llanfair (which in Welsh stands for Church of Santa Maria) may refer to the following localities of the Wales:
UK
- Llanfair, county village of Ceredigion
- Llanfair, county village of Gwynedd
- Llanfair, village of Vale of Glamorgan County District
- Llanfair-ar-y-bryn, county village of Carmarthenshire
- Llanfair Caereinion, county village of Powys
- Llanfair Clydogau, county village of Ceredigion
- Llanfair Dyffryn Clwyd, county village of Denbighshire (Wales, UK)
- Llanfair-is-gaer, county village of Gwynedd
- Llanfairfechan, Municipality of the district of Conwy
- Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch, County borough of Anglesey
- Llanfair Talhaearn, village in the district of Conwy
- Llanfair-ym-Muallt (Builth Wells in English), County Municipality of Powys
- Llanfair-yng-Nghornwy, county village of Anglesey
- Llanfair yn Neubwll, county village of Anglesey