Mynydd Bedwellte is the name given to the broad ridge of high ground between the Rhymney Valley (Welsh: Cwm Rhymni) and the Sirhowy Valley in the Valleys region of South Wales. It straddles the boundary of the unitary areas of Caerphilly and Blaenau Gwent.
The broad-topped ridge runs northwest to southeast and achieves a summit height of 486 metres (1,594 ft) above sea-level, at a point crowned by a trig point at OS grid ref SO 145060.