Harald Johan Løbak (2 June 1904 – 6 February 1985) was a Norwegian politician for the Labour Party. He was born in Trysil. He was elected to the Norwegian Parliament from Hedmark in 1945, and was re-elected on six occasions. He was the Minister of Agriculture from May 1956 to April 1960 during the third cabinet Gerhardsen. During the period, he was replaced in the Norwegian Parliament by Haldis Tjernsberg.