Kasfjord is a village in the municipality of
Harstad in
Troms county,
Norway. The village is located at the end of the Kasfjorden on the north side of
Hinnøya island, about west of the town of
Harstad and about south of
Elgsnes. The Kasfjordvannet lake is located along the east side of the village. The village has a population (2011) of 252. The
population density is .