Knut Hedemann (13 May 1922 – 2 May 2011) was a Norwegian diplomat. He was born in Ringsaker as a son of politician Rudolf Hedemann and younger brother of journalist . He finished his secondary education in 1943. During the Second World War he was a member of the Norwegian police troops in exile in Sweden, having fled from Norway in 1944. After studying in the US from 1946 to 1947 he took the cand.jur. degree at the University of Oslo in 1948. In the same year he married physician's daughter Gro Ranveig Hansen.