Tromsø Airport (Norwegian: Tromsø lufthavn; IATA: TOS, ICAO: ENTC) is an international airport located at Langnes in the city of Tromsø in Tromsø Municipality, Troms county, Norway. Situated on the western shore of the island of Tromsøya, it features a 2,447-meter (8,028 ft) runway aligned 18/36. Owned and operated by the state-owned Avinor, Langnes handled 1,910,692 passengers, 43,219 aircraft movements and 2,758 tonnes of cargo in 2014. This makes Tromsø the fifth-busiest airport in the country.

The airport opened on 14 September 1964, replacing Tromsø Airport, Skattøra, a water aerodrome. Tromsø became and still is the main hub for Widerøe's regional flights to Finnmark. Main haul flights to other primary airports were carried out by Scandinavian Airlines (SAS). Braathens SAFE and its Busy Bee subsidiary operated from Tromsø from 1967 to 2002. Norwegian Air Shuttle has flown from Langnes since 1992 and Lufttransport has its main operating base at Tromsø. The current Terminal B was built in 1977.