Dún Aonghasa
| Alternative name | Dun Aengus |
|---|---|
| Location | Inis Mór |
| Region | Ireland |
| Coordinates | 53°7′33″N 9°46′5″W / 53.12583°N 9.76806°W |
| Type | hill fort/promontory fort |
| Area | 6 hectares (outer wall) |
| History | |
| Material | limestone |
| Founded | from 1100 BC |
| Periods | Bronze Age, Iron Age, early Medieval |
| Site notes | |
| Public access | yes |
| Reference no. | 23 |
Dún Aonghasa (unofficial anglicised version Dun Aengus) is the best-known of several prehistoric hill forts on the Aran Islands of County Galway, Ireland. It lies on Inis Mór, at the edge of a 100-metre-high (330 ft) cliff.
A popular tourist attraction, Dún Aonghasa is also an important archaeological site.