Tranøy (Northern Sami: Ránáidsullo suohkan) is a former municipality in Troms county, Norway.

[5][6] The nearly-abandoned island of Tranøya, with the 18th-century wooden Tranøy Church, used to be the centre of activities for the municipality.

From Tranøybotn it is only a short walk to the Ånderdalen National Park, with varied landscapes within a very limited area, including deep pine forests.

The new municipality would encompass the whole island of Senja plus part of the mainland located between the Gisundet strait and the Malangen fjord.

[8][9] The municipality (originally the parish) is named after the small island of Tranøya (Old Norse: Tranøiar) since the first Tranøy Church was built there.

The official blazon is "Argent, a flounder embowed reversed sable" (Norwegian: I sølv en krummet svart kveite).

The municipality of Tranøy was located on the southern end of the large island of Senja.

The Andfjorden, Vågsfjorden, and Solbergfjorden surrounded the municipality to the west, south, and southeast.

The municipal council (Kommunestyre) of Tranøy was made up of 17 representatives that were elected to four year terms.