Gustav Adolf Sjaastad (6 April 1902 – 7 May 1964) was a Norwegian lawyer and politician for the Labour Party.
He was born in Skogn Municipality as a son of farmer Olaf Herman Sjaastad (1869–1944) and Marta Fostad (1870–1933).
[1] During World War II he was a member of the Norwegian resistance movement.
He was imprisoned at Møllergata 19 again, before being transferred to Grini concentration camp, where he sat from May 1944 to the war's end on 8 May 1945.
He also became a member of several public committees in 1946 and 1947, including Arbeidstvistkomiteen av 1946, Ferielovkomiteen and Pris- og rasjonaliseringskomiteen.