Grimstadfjord or Grimstadfjorden is a small fjord in the municipality of Bergen in Vestland county, Norway. The 4-kilometre (2.5 mi) long fjord lies on the western side of the Bergen Peninsula, and it divides the Laksevåg and Ytrebygda boroughs of the city of Bergen. The Grimstadfjorden lies just north of Bergen Airport, Flesland and the Norwegian naval base Haakonsvern lies on the northern shore of the fjord. The lake Nordåsvannet flows to the west into this fjord and then this fjord flows west into the large Raunefjorden. The island of Bjorøy lies at the western mouth of the Grimstadfjorden.