Carrickkildavnet Castle
| Carrickkildavnet Castle | |
|---|---|
| Native name Caisleán Ghráinne (Irish) | |
| Kildavnet Castle/Tower Grace O'Malley's Castle Kildownet Tower | |
| Type | tower house |
| Location | Carrickkildavnet, Achill Island, County Mayo, Ireland |
| Coordinates | 53°52′51″N 9°56′45″W / 53.880875°N 9.945935°W |
| Height | 12 m (39 ft) |
| Built | c. 1429 |
| Owner | State |
| Official name | Carrickkildavnet Castle |
| Reference no. | 458 |
Carrickkildavnet Castle or Kildavnet Castle is a tower house and National Monument located in Achill Island, Ireland.