Skjåk is a municipality in Innlandet county, Norway. It is located in the traditional district of Gudbrandsdal. The administrative centre of the municipality is the village of Bismo. Most of the municipal residents live in the Billingsdalen and Ottadalen valleys along the river Otta. The local newspaper is named Fjuken. The 2,076-square-kilometre municipality is the 33rd largest by area out of the 356 municipalities in Norway.