| Type: | Suburban village |
| Coordinates: | 51.6928°N -4.1356°W |
| Official Name: | Dafen |
| Country: | Wales |
| Map Type: | Wales Carmarthenshire |
| Unitary Wales: | Carmarthenshire |
| Lieutenancy Wales: | Dyfed |
| Community Wales: | Llanelli Rural |
| Post Town: | LLANELLI |
| Postcode Area: | SA |
| Postcode District: | SA14 |
| Static Image Name: | St Michael and All Angels Church, Dafen (geograph 4080111).jpg |
| Static Image Caption: | St Michael and All Angels Church |
| Constituency Westminster: | Llanelli |
Dafen is a village situated east of Llanelli in Carmarthenshire, Wales, part of the Llanelli Rural community. Dafen borders the villages of Felinfoel (Bryngwyn-Mawr), Bryn, Penceilogi, and Pemberton.
Dafen is also an electoral ward, electing councillors to Llanelli Rural Council and Carmarthenshire County Council. At the 2001 census the Dafen ward had a population of 3,433,[1] increasing to 3,597 at the 2011 Census.[2]
The village has both residential and industrial areas, and Llanelli's Prince Philip Hospital is located here.
Wales Air Ambulance is based at Dafen in a purpose-built headquarters completed in 2016.[3]