Ole Kristian Grimnes (born 4 January 1937, in Tromsø) is a Norwegian historian.
He was a professor in modern history at the University of Oslo, and is currently professor emeritus at the same university.
In particular he has worked with the periods 1890 - 1905 and 1940 - 1945 in Norwegian history.
He is a member of the Norwegian Academy of Science and Letters.[1]