Harold Chamberlain "Hal" Banks (February 28, 1909 - September 24, 1985) was a controversial labour union leader in Canada. An American with mob connections, he came to Canada in 1949 to help bust purportedly Communist-controlled shipping unions and establish the Seafarers' International Union as their replacement.

He remained in Canada until 1964, when he returned to the United States rather than face criminal charges stemming from a physical assault on a rival union leader. The Canadian government filed an extradition request, which was refused by United States Secretary of State Dean Rusk.

In 1985, Canadian documentary producer Donald Brittain made a film about Banks, The Saga of Hal C. Banks. Maury Chaykin played Banks in historical reenactments.

Canadian labour union leaders | American labor leaders