Caehopkin (Welsh: Caehopcyn) is a village in Powys, Wales. It lies between Abercraf and Coelbren in the Swansea Valley on the border of the Brecon Beacons National Park.

Caehopkin
Caehopkin is located in Powys
Caehopkin
Caehopkin
Location within Powys
OS grid referenceSN8212
Principal area
CountryWales
Sovereign stateUnited Kingdom
PoliceDyfed-Powys
FireMid and West Wales
AmbulanceWelsh
List of places
UK
Wales
Powys
51°47′N 3°43′W / 51.79°N 03.71°W / 51.79; -03.71

Previously it was a mining community, however many of the mines in the area closed in the 1960s such as Abercrave Colliery and Ynyscedwyn Colliery. Now only the Nant Helen opencast coal site remains in the area. The Wales Ape and Monkey Sanctuary lies just outside the village near Abercraf.

It is in the community of Tawe-Uchaf.