Måsøy (Northern Sami: Muosát; Kven: Moseija) is a municipality in Finnmark county, Norway.

The tallest tower in Scandinavia, the 362-meter (1,188 ft) tall Ingøy radio transmitter is located on Ingøya island.

There is also a road connection to Havøysund, albeit often blocked by snow in the winter at the pass between Snefjord and Bakfjord.

Soon after (the same year), the northern district (population: 498) was separated to become the new Maasøe Municipality, named after the village on the island of Måsøya where the local Måsøy Church is located.

On 1 January 1963, a small area of southern Måsøy, north of Kokelv, (population: 34) was transferred to the neighboring Kvalsund Municipality.

On 1 January 1984, the western part of the island of Magerøya (population: 240) was transferred from Måsøy to the neighboring Nordkapp Municipality.

[9] The municipality (originally the parish) is named after the island of Måsøya (Old Norse: Másøy) since the first Måsøy Church was built there.

The first element is mási, the diminuitive form of the genitive case of the word már which means "little seagull".

The official blazon is "Gules, a gaff bendwise Or" (Norwegian: I rødt en gull klepp skrått oppad).

Most people live in the village of Havøysund, but there are also small hamlets spread around the islands and in the fjord areas, notably Snefjord, Slåtten, Ingøy, Gunnarnes, and Måsøy.

Once again, some of the county's largest seabird colonies can be found in the municipality with the island of Hjelmsøya being one of the more interesting.