Beddau (Welsh for 'Graves'; Welsh: Y Beddau) is a large former mining village (and electoral ward) situated within the South Wales Valleys [2] around 1.5 miles (2.4 km) from Llantrisant and 4 miles (6.4 km) from the larger town of Pontypridd in the county borough of Rhondda Cynon Taf, South Wales.

A 2018 review of electoral arrangements by the Local Democracy and Boundary Commission for Wales would see Beddau and Tyn-y-nant merged to form a single county ward.

Neil Jenkins, Michael Owen and Gethin Jenkins are former pupils of Bryn Celynnog Comprehensive, and Gemma Hallett a former pupil of the Welsh School in Llanharry, all grew up in Beddau and played for the Welsh Rugby Union.

Ian Phillips, Ross Robson and Cavan Phillips have all represented the Welsh Darts Organisation in the British internationals and Europe cups (Youth for Ross 2008/9 and Cavan 2014/15/16) Beddau fields a rugby union team, Beddau RFC, as well as its own football team, Cwm Welfare A.F.C.

Extensive sidings and rail traffic served Cwm Colliery and coking works until 1984 when the line to junction at Pontyclun station was closed and mothballed.