| Arenig Fawr | |
|---|---|
 Arenig Fawr from the A4212 to Ffestiniog. | |
| Highest point | |
| Elevation | 854 m (2,802 ft) |
| Prominence | 479 m (1,572 ft) |
| Parent peak | Moel Siabod |
| Listing | Marilyn, Hewitt, Nuttall |
| Coordinates | 52°55′03″N 3°44′46″W / 52.91757°N 3.74601°W |
| Naming | |
| English translation | Great High Ground |
| Language of name | Welsh |
| Pronunciation | Welsh: [aˈrɛnɪɡ ˈvau̯r] |
| Geography | |
  Arenig Fawr Gwynedd, Wales | |
| Parent range | Snowdonia |
| OS grid | SH827370 |
| Topo map | OS Landranger 124 |
Arenig Fawr (Welsh for 'great high ground') is a mountain in Snowdonia, North Wales, close to Llyn Celyn reservoir, alongside the A4212 between Trawsfynydd and Bala.