(Kárášjohka ˈkhaːraːʃˌjohka; Kaarasjoki) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the village of Karasjok. Other villages include Dorvonjárga, Šuoššjávri, and Váljohka.
The municipality is the second largest by area out of the 356 municipalities in Norway. Karasjok is the 247th most populous municipality in Norway with a population of 2,584. The municipality's population density is and its population has decreased by 6.6% over the previous 10-year period.
A survey conducted on behalf of the Sami Language Council in the year 2000 showed that 94 percent of the population are Sami speakers.
The municipality of Karasjok was established on 1 January 1866 when it was separated from the old Kistrand municipality. Initially, the population of Karasjok was 515. The municipal borders have not changed since that time.
On 1 January 2020, the municipality became part of the newly formed Troms og Finnmark county. Previously, it had been part of the old Finnmark county.
Karasjok is a Norwegianized form of the Northern Sami language name Kárášjohka. The meaning of the first element could be káráš from Northern Sami which could mean "food plate of wood", or from Finnish, kara, "something that sticks". The last element is johka which means "river", whose equivalent in Finnish is joki.
The name of the municipality was Karasjok until 1990 when it was changed to Kárášjohka-Karasjok. It was the third municipality in Norway to get a Sami name. In 2005, the name was again changed, such that either Kárášjohka or Karasjok can be used.
The coat of arms was granted on 27 June 1986. The official blazon is "Gules, three five-tongued flames Or two and one" (I rødt tre femtungede gule flamer, 2-1). This means the arms have a red field (background) and the charge is three five-tongued flames with two above one. The flames have a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used.