| Rhymney Valley Welsh: Cwm Rhymni | |
|---|---|
.svg) | |
| History | |
| • Created | 1 April 1974 |
| • Abolished | 31 March 1996 |
| • Succeeded by | Caerphilly County Borough |
| Status | District |
| • HQ | Ystrad Mynach |
 | |
Rhymney Valley (Welsh: Cwm Rhymni) was one of six local government districts in Mid Glamorgan from 1974 to 1996.