| Rhos Dirion | |
| Elevation M: | 713 |
| Prominence M: | 22 |
| Parent Peak: | Waun Fach |
| Listing: | sub Hewitt, Nuttall |
| Language: | Welsh |
| Location: | Black Mountains, South Wales |
| Grid Ref Uk: | SO210333 |
| Topo: | OS Landranger 161 |
Rhos Dirion is a top of Waun Fach in the Black Mountains in south-eastern Wales. It is the highest point on the Rhos Dirion - Chwarel y Fan ridge.
The summit is marked by a trig point and crowns an area of peat bog, heather and long grasses. Its northern face is precipitous.[1]