Arne Treholt (born 13 December 1942) is a former Norwegian social democratic politician and diplomat convicted of high treason and espionage on behalf of the Soviet Union and Iraq.

He was a member of the Norwegian Labour Party and also worked as a journalist for the national daily Arbeiderbladet. He was political secretary for the minister of commerce Jens Evensen before he became deputy foreign minister in the bureau of maritime affairs 1976–1978. From 1979 to 1982 he was connected to the Norwegian UN delegation in New York as an embassy counsellor. During the years 1982–1983 he studied at the Norwegian Joint Staff College. He was also department head of division for the Norwegian Ministry of Foreign Affairs' press from 1983.[1]

Arrested for espionage in 1984, he served a prison sentence until being pardoned by a Labour government in 1992. After his release from prison, he settled in Russia and later Cyprus.