The Ofotfjord (English),[1][2] Ofotfjorden (Norwegian),[3] or Ufuohttá (Northern Sami)[3] is a fjord in Nordland county, Norway.

The 78-kilometre (48 mi) long Ofotfjord is Norway's 12th longest fjord and it is also the 18th deepest, with a maximum depth of 553 metres (1,814 ft).

From north-west, going clockwise, these are: Ramsundet (which is actually a narrow strait connecting with the larger Tjeldsundet), Bogen (a fairly wide bay), Herjangsfjord (the widest of these branches), Rombaken (which is crossed by the European route E6 highway using the Rombak Bridge), Beisfjorden (crossed by the European route E6 highway using the Beisfjord Bridge), Skjomen (the longest of these fjord branches, crossed by the E6 highway using the Skjomen Bridge) and finally Ballangen.

At the mouth of Ofotfjord, on the southern side, is another fjord, the narrow Efjorden, which extends southeast (crossed by the E6 highway using the Efjord Bridges).

The Ofotfjord has a rich marine life, with huge quantities of herring staying in the fjord in the winter.

Gulls are common all year, and many migratory birds arrive in summer, such as oystercatchers and grey herons.