Greg Terrion (born May 2, 1960 in Marmora, Ontario) is a retired professional ice hockey player who played 561 games in the National Hockey League. His jersey number was 7 and he played for the Toronto Maple Leafs and the Los Angeles Kings.
Terrion turned pro with the Kings in 1980-81 and scored 37 points in his first two seasons with the club. In 1982 he was traded to the Toronto Maple Leafs for a draft choice. He played six solid seasons with the Leafs, mostly as a defensive specialist.
After playing for the Newmarket Saints in 1988-89 Terrion retired.
In the NHL Terrion played in 561 games and scored 93 goals and 150 assists.