Ivar Kristiansen Hognestad (16 October 1888 – 30 April 1973) was a Norwegian politician for the Labour Party.
He was born in Time.
He was elected to the Norwegian Parliament from Rogaland in 1934, and was re-elected on four occasions.
Hognestad held various positions in Time municipality council in the periods 1919–1922, 1928–1940 and 1947–1952.