Map - Tromsø

Tromsø (,, ; Romsa ; Tromssa; Tromsö) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the city of Tromsø.

Tromsø lies in Northern Norway. The 2521 km2 municipality is the 21st largest by area out of the 356 municipalities in Norway. With a population of 77,544, Tromsø is the 12th most populous municipality in Norway. The municipality's population density is 31.4 PD/km2 and its population has increased by 12.2% over the previous 10-year period. It is the largest urban area in Northern Norway and the third largest north of the Arctic Circle anywhere in the world (following Murmansk and Norilsk). The city center of Tromsø is located on the island of Tromsøya, but the urban area also encompasses part of the nearby mainland and part of the island Kvaløya. Tromsø is 350 km north of the Arctic Circle. Tromsøya is connected to the mainland by the Tromsø Bridge and the Tromsøysund Tunnel, and to the island of Kvaløya by the Sandnessund Bridge.

The municipality is milder than most settlements on the same latitude, due to the effect of the westerlies reaching this far north, as well as the North Atlantic Drift, a branch of the Gulf Stream. Tromsø's latitude of just below 70°N renders annual midnight sun and polar night depending on the season.

The city centre contains the highest number of old wooden houses in Northern Norway, the oldest dating from 1789. Tromsø is a cultural hub for the region, with several festivals taking place in the summer. Due to its location, many countries used to have consulates or missions in Tromsø in the 1990s.

The city of Tromsø is named after the island of Tromsøya, on which it stands. The last element of the city's name comes from 'island' (øy, ø), but the etymology of the first element is uncertain. Several theories exist. One theory holds "Troms-" to derive from the old (uncompounded) name of the island (Old Norse: Trums). Several islands and rivers in Norway have the name Tromsa, and the names of these are probably derived from the word straumr which means "(strong) current." (The original form must then have been Strums, for the missing s, see Indo-European s-mobile.) Another theory holds that Tromsøya was originally called Lille Tromsøya (Little Tromsøya), because of its proximity to the much bigger island today called Kvaløya, that according to this theory was earlier called "Store Tromsøya" due to a characteristic mountain known as Tromma (the Drum). The mountain's name in Sámi, Rumbbučohkka, is identical in meaning, and it is said to have been a sacred mountain for the Sámi in pre-Christian times.

The Sámi name of the island, Romsa, is assumed to be a loan from Norse - but according to the phonetical rules of the Sami language, the frontal t has disappeared from the name. However, an alternative form - Tromsa - is in informal use. There is a theory that holds the Norwegian name of Tromsø derives from the Sámi name, though this theory lacks an explanation for the meaning of Romsa. A common misunderstanding is that Tromsø's Sámi name is Romssa with a double "s". This, however, is the accusative and genitive form of the noun used when, for example, writing "Tromsø Municipality" (Romssa Suohkan). In Finnish, however, the word is written with a double "s": Tromssa.