Frank Joseph Hughes (November 26, 1883 – April 14, 1967) was a Canadian lawyer and puisne judge of the Supreme Court of Canada.

Born in Peel County, Ontario, the son of James Hughes and Winnifred Mullarkey, he received a Bachelor of Arts degree from Queen's University in 1907 and studied at Osgoode Hall Law School.

He practised law, specialising in defending insurance companies in running down cases, until he was appointed to the Supreme Court of Canada on March 17, 1933.

After his resignation from the bench, Hughes returned to legal practice.

This Canadian biographical article relating to law is a stub.