Major General Ingvar Oskar Daniel Berg (10 October 1905 – 2 July 1993) was a Swedish Air Force officer and modern pentathlete who finished fourth at the 1928 Summer Olympics.

He attended the higher course at the Artillery and Engineering College from 1930 to 1932 and conducted special studies at the Royal Institute of Technology from 1933 to 1934.

Promoted to major in 1942, Berg then served as a teacher at the Royal Swedish Air Force Staff College from 1943 to 1944 and as commanding officer of the Swedish Air Force Squadron Leader School (Flygvapnets bomb- och skjutskola).

[3] He left the position in 1966 and then from 1966 to 1967, Berg headed the Swedish contingent at the Neutral Nations Supervisory Commission (NNSC) in Korea.

Berg retired from the military in 1967 and then headed the Flygvapnets personaldelegation ("Swedish Air Force Personnel Delegation") from 1967 to 1974.