| Hoddøya | |
| Mapframe-Zoom: | 9 |
| Location: | Trøndelag, Norway |
| Coordinates: | 64.4822°N 11.214°W |
| Area Km2: | 10.3 |
| Length Km: | 5.5 |
| Width Km: | 3.5 |
| Coastline Km: | 25 |
| Elevation M: | 207 |
| Highest Mount: | Vattafjellet |
| Country: | Norway |
| Country Admin Divisions Title: | County |
| Country Admin Divisions: | Trøndelag |
| Country Admin Divisions Title 1: | Municipality |
| Country Admin Divisions 1: | Namsos Municipality |
Hoddøya[1] is an island in Namsos Municipality in Trøndelag county, Norway. It lies in the Namsenfjorden, about west of the town of Namsos. The island is located between the island of Otterøya (to the north and east) and the mainland of Namsos Municipality (to the south and west).[2] The highest point on the 10.3km2 island is the 207m (679feet) tall mountain Vattafjellet.