| Halsön | |
| Map: | Sweden Norrbotten#Sweden |
| Coordinates: | 65.7264°N 23.5021°W |
| Waterbody: | Bay of Bothnia |
| Area Km2: | 10 |
| Country: | Sweden |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions: | Norrbotten |
| Country Admin Divisions Title 1: | Municipality |
| Country Admin Divisions 1: | Kalix Municipality |
| Population: | Uninhabited |
Halsön is an island in the north of the Swedish sector of the Bay of Bothnia, in the Kalix archipelago.
Halsön lies to the east of the mouth of the Kalix River, about southeast of Karlsborg.It is about west of Granön.There is a beach on the east of the island, with large dunes.For visitors there are fireplaces, seating areas and rubbish bins.
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