| Prestmåsøya | |
| Location: | Nordland, Norway |
| Mapframe-Zoom: | 8 |
| Coordinates: | 67.6068°N 15.1685°W |
| Area Km2: | 4.21 |
| Length Km: | 3.4 |
| Width Km: | 1.7 |
| Elevation M: | 255 |
| Country: | Norway |
| Country Admin Divisions Title: | County |
| Country Admin Divisions: | Nordland |
| Country Admin Divisions Title 1: | Municipality |
| Country Admin Divisions 1: | Sørfold Municipality |
| Population: | 0 |
Prestmåsøya[1] is an uninhabited island in Sørfold Municipality in Nordland county, Norway. The 4.21km2 island lies at the eastern end of the Folda fjord where it splits into the Nordfolda and Sørfolda. The now-abandoned village of Rørstad lies on the mainland, about to the southeast.[2] The island is basically one large rocky, mountain reaching above sea level.[3]