| Isla San Damian | |
| Image Caption: | Isla San Damian |
| Map: | Mexico |
| Location: | Gulf of California |
| Coordinates: | 25.5865°N -111.1305°W |
| Elevation M: | 40 |
| Country: | Mexico |
| Country Admin Divisions Title: | State |
| Country Admin Divisions: | Baja California Sur |
| Population: | Uninhabited |
Isla San Damian, is an island in the Gulf of California east of the Baja California Peninsula. The island is uninhabited and is part of the Loreto Municipality.
Isla San Damian has only one species of reptile, the black-tailed brush lizard (Urosaurus nigricauda).[1]