| Illauneeragh West | |
| Map: | island of Ireland |
| Native Name: | An tOileán Iarthach Thiar |
| Native Name Link: | Irish language |
| Location: | Atlantic Ocean |
| Coordinates: | 53.3519°N -9.6725°W |
| Country: | Ireland |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions: | Connacht |
| Country Admin Divisions Title 1: | County |
| Country Admin Divisions 1: | Galway |
| Population: | 0 |
| Population As Of: | 2006 |
Illauneeragh (Gaeilge:An tOileán Iarthach Thiar[1]) is an island in County Galway, Ireland which is connected to Illaunmore at low water.[2]