Cilrhedyn is a hamlet and parish[clarification needed] in the counties of Carmarthenshire and Pembrokeshire, Wales, in the hill country to the south of the Teifi valley.

The placename is Welsh, meaning "bracken nook".

[2] The parish of West Cilrhedyn (Pembrokeshire) is now part of the community of Clydau.

It had an area of 887 Ha, and consisted entirely of scattered farms.

It had an area of 2238 Ha, and included the villages of Capel Iwan 51°59′55″N 4°29′32″W / 51.99861°N 4.49222°W / 51.99861; -4.49222 and Cwmorgan 51°59′12″N 4°29′8″W / 51.98667°N 4.48556°W / 51.98667; -4.48556.