Carl Ingvar Andersson (19 March 1899 - 14 October 1974) was a Swedish historian and director of the National Archives of Sweden.
Andersson was an associate professor at Lund University from 1928 to 1938[1] and director of the National Archives from 1950 to 1965. Most of his historical research was focused on the 16th century. Among his works is a biography of Eric XIV of Sweden.[2] In 1950 Andersson became a member of the Swedish Academy.