Dyrøy (Divrráid suohkan) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the village of Brøstadbotn. Other villages include Dyrøyhamn, Espenes, Holm, and Hundstrand.
The municipality is the 270th largest by area out of the 356 municipalities in Norway. Dyrøy is the 328th most populous municipality in Norway with a population of 1,068. The municipality's population density is and its population has decreased by 10.1% over the previous 10-year period.
The municipality is named after the island of Dyrøya, which is connected with the mainland with the modern Dyrøy Bridge. Most people, however, don't live on the island, but live in Brøstadbotn on the mainland.
The municipality of Dyrøy was established on 1 September 1886, when it was separated from the municipality of Tranøy. The initial population of Dyrøy was 1,281. During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, the parts of Tranøy Municipality located on the mainland (population: 382) were transferred to Dyrøy.
On 1 January 2020, the municipality became part of the newly formed Troms og Finnmark county. Previously, it had been part of the old Troms county.
The municipality (originally the parish) is named after the island of Dyrøya (Old Norse: Dýrøy), since the first Dyrøy Church was built there. The first element is dýr which means "deer" (specifically reindeer) and the last element is øy which means "island". Prior to 1909, the name was written Dyrø.
The coat of arms was granted on 4 April 1986. The official blazon is "Azure, a fox statant argent" (I blått en stående sølv rev). This means the arms have a blue field (background) and the charge is a locally-bred platinum fox. The fox has a tincture of argent which means it is commonly colored white, but if it is made out of metal, then silver is used. The fur industry has had a long tradition in Dyrøy and in the 1930s, a special sort of arctic fox was bred there which was called the platinum fox.