Krossfjorden (English: Cross Fjord) is a 30 km long fjord on the west coast of Spitsbergen, which is the largest and only permanently populated island of the Svalbard archipelago in Norway. To the north, the fjord branches into Lilliehöökfjorden, Möllerfjorden and Kollerfjorden. To the south it is separated from Kongsfjorden by a line from Collinsodden on Mitrahalvøya east to Kapp Guissez.