Capel Dewi is a small village in the county of Ceredigion, Wales. The village lies in the Clettwr Valley mostly on the eastern bank of the River Clettwr, a tributary of the River Teifi. Capel Dewi is part of the community of Llandysul along with the settlements of Horeb, Pont-Siân, Pren-gwyn, Tregroes, Rhydowen and the village of Llandysul itself. The village is one of two settlements in Ceredigion called Capel Dewi, the other being the smaller Capel Dewi near Aberystwyth.

Capel Dewi Welsh: Capel Dewi
Capel Dewi Location within Ceredigion
Population	1,293 (ward 2011)[1]
OS grid reference	SN455425
Principal area	Ceredigion
Preserved county	Dyfed
Country	Wales
Sovereign state	United Kingdom
Post town	LLANDYSUL
Postcode district	SA44
Police	Dyfed-Powys
Fire	Mid and West Wales
Ambulance	Welsh
UK Parliament	Ceredigion
Senedd Cymru – Welsh Parliament	Ceredigion
List of places UK Wales Ceredigion 52°03′33″N 4°15′18″W / 52.059277°N 4.254993°W / 52.059277; -4.254993

The village is home to several buildings of note, including the Rock Mill. Opened in 1890, the Rock Mill is a waterwheel powered woollen mill, the last commercial woollen mill remaining in Wales.^[2] Capel Dewi also has its own church, St David's Church, which gives the village its name. The church, which is in the centre of the village, was made a Grade II listed building in 1993.^[3]