Långön is an island in the northwest of the Swedish sector of the Bay of Bothnia, in the Luleå archipelago.

Långön is a relatively large island in the Luleå archipelago, with an area of 572 hectares (1,410 acres).

The land has gently rolling hills, the highest being Storberget on the north side at 30 metres (98 ft).

[1] In winter the island can be accessed via an ice road, the longest in Sweden at 15 kilometres (9.3 mi).

[5] The "magic strait" between Långön and Hindersön was dredged to a depth of 3.3 metres (11 ft) in 2012 to allow faster access from Luleå to the islands of the outer archipelago for sailboats and large tour boats.