O'Malley (born October 21, 1940 in Toronto, Ontario) is a retired ice hockey player.
He is an Olympian who represented Canada at three Winter Olympics (1964, 1968 and 1980), winning a bronze medal in 1968.
A long-time coach for a variety of Notre Dame Hounds' Bantam and Midget hockey teams at the Athol Murray College of Notre Dame in Wilcox, Saskatchewan, he was inducted into the International Ice Hockey Federation Hall of Fame in 1998.
Since 2006, O'Malley has coached the University of Regina women's ice hockey team.