Knut Berg (4 August 1925 – 29 November 2007) was a Norwegian art historian and museologist.

He was the son of architect and antiquarian Arno Berg (1890–1974) and Signe Mowinckel Larsen (1887–1966).

He studied at the University of Oslo obtaining a master's degree in art history in 1953.

He continued his medieval studies in the United Kingdom, Italy and France.

Knut Berg was a member of the Norwegian Academy of Sciences and Commander of the Order of St.