Lavangen (Norwegian) or Loabák (Northern Sami)[5] is a municipality in Troms county, Norway.

Other villages in Lavangen include Fossbakken and Spansdalen (in the inland areas) and Kjeiprød, Røkenes, Låternes, Tennevoll, Hesjevika, Soløy, and Å (surrounding the fjord).

[8] On 1 January 2020, the municipality became part of the newly formed Troms og Finnmark county.

[10] The municipality is named after the local Lavangen fjord (Old Norse: Laufangr) since it is a central geographical feature of the area.

It is called Loabák when it is spelled alone, but it is Loabága suohkan when using the Sami language equivalent to "Lavangen Municipality".

The official blazon is "Gules, three birch leaves Or in pall stems conjoined" (Norwegian: I rødt tre gull bjørkeblad forent i trepass).

This means the arms have a red field (background) and the charge is three birch leaves that are connected and in a Y-shape design.

The municipality encompasses the land around the Spansdalelva river valley and most of the area around the Lavangen fjord, south of the Astafjorden.