Hertsön
|   Hertsön | |
| Geography | |
|---|---|
| Coordinates | 65°35′03″N 22°11′58″E / 65.584159°N 22.199539°E | 
| Adjacent to | Bothnian Bay | 
| Area | 73.42 km2 (28.35 sq mi)[1] | 
| Administration | |
| County | Norrbotten | 
| Municipality | Luleå | 

Hertsön is a Swedish island in the Bothnian Bay, largely occupied by the eastern districts of the city of Luleå.
Due to post-glacial rebound, the islands Svartön, Mulön, Granön and Björkön have merged with the island. The size of the island is around 73.42 km², making it the twelfth largest island in Sweden.
References
- ^ "Statistisk årsbok 2011" (PDF) (in Swedish). Statistics Sweden. p. 12. Archived from the original (PDF) on 13 January 2012. Retrieved 5 July 2011.