| Country: | Wales |
| Constituency Welsh Assembly: | Carmarthen East and Dinefwr |
| Official Name: | Pantyffynnon |
| Community Wales: | Ammanford |
| Unitary Wales: | Carmarthenshire |
| Lieutenancy Wales: | Dyfed |
| Constituency Westminster: | Caerfyrddin |
| Post Town: | AMMANFORD |
| Postcode District: | SA18 |
| Postcode Area: | SA |
| Dial Code: | 01269 |
| Os Grid Reference: | SN623114 |
| Coordinates: | 51.787°N -4°W |
Pantyffynnon is a small village in Carmarthenshire, Wales, half a mile south-west of Ammanford, and a mile east of Tycroes. It lies between the rivers Loughor and Amman at the foot of Mynydd y Betws.
The village is served by Pantyffynnon railway station on the Heart of Wales Line.