Gary Walter Doak (born February 26, 1946 in Goderich, Ontario) is a former NHL defenceman who played for the Detroit Red Wings, Boston Bruins, Vancouver Canucks and New York Rangers. He recorded 23 goals and 107 assists for a total of 130 points in 789 NHL regular season games. His name was engraved on the Stanley Cup in 1970. Following retirement, Doak was the Boston Bruin's assistant coach from 1981–82 to the 1984–85 season.