| Country: | Wales |
| Official Name: | Llandeilo'r-Fan |
| Welsh Name: | Llandeilo'r-Fan |
| Unitary Wales: | Powys |
| Lieutenancy Wales: | Powys |
| Constituency Westminster: | Brecon and Radnorshire (UK Parliament constituency) |
| Constituency Welsh Assembly: | Brecon and Radnorshire (UK Parliament constituency) |
| Postcode Area: | LD |
| Postcode District: | LD3 |
| Post Town: | Brecon |
| Coordinates: | 51.9992°N -3.6088°W |
Llandeilo'r-Fan is a small village located in Powys, Wales. It is located between Llandovery and Brecon. It is very rural and is located in a hilly area of mid wales. The village has a church, community hall and a few houses. The nearest shop and pub are in Sennybridge.