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Tromsø(trôms`ö', tro͝oms`ö'), city (1995 pop. 55,577), capital of Troms co., NW Norway, on the island of Tromsøy; chartered 1794. The chief city of arctic Norway, it has large herring fisheries and is a base for shipping and seal hunting. Manufactures include ships and rope. It is also a starting point for cruise ships. In World War II, the German battleship Tirpitz was sunk (Nov. 12, 1944) by British planes just off Tromsø.
a city in northern Norway, on a small island near the island of Sørkvaløy in the Norwegian Sea. Capital of the fylke (county) of Troms. Population, 42,000 (1974). Tromso is a fishing port. Industry is represented by metalworking and fish processing.