Terrence M. O'Malley (born October 21, 1940 in Toronto, Ontario) is a retired ice hockey player. He represented Canada at three Winter Olympics, winning one bronze medal. He was inducted into the International Ice Hockey Federation Hall of Fame in 1998.
O'Malley was a member of the Canada national men's ice hockey team from 1964 to 1969. He won bronze medals at the World Championships in 1965, 1966, and 1967. He also won a bronze medal in the 1968 Olympics.
He was the coach of the University of British Columbia in 1986-87.
He spent 23 years at Athol Murray College of Notre Dame as a coach, teacher and evetnually president of the school from 2003 to 2006.
He was inducted into the Saskatchewan Hockey Hall of Fame in 2016 in the builders category.