Norsk Forurensningskontroll
 Norsk Forurensningskontroll AS (Norwegian Pollution Control) or NFK or was a specialized Norwegian aviation company and aircraft operator with a fleet of four de Havilland Canada DHC-6 Twin Otter aircraft. The company was founded in 1983 and initially intended to operate the aircraft to apply dispersants on oil spills at sea as a part of the national oil spill defense system.