Finnmark County Municipality (Norwegian: Finnmark fylkeskommune, Northern Sami: Finnmárkku fylkkagielda) was the regional governing administration for the old Finnmark county in Norway. It was dissolved on 31 December 2019 when Finnmark county was merged into Troms og Finnmark county starting on 1 January 2020. The administration was located in the town of Vadsø and was led by a county council. The last mayor of the county was Runar Sjåstad from 2007 until 2019.