1979–80 OMJHL season

The 1979–80 OMJHL season was the sixth season of the Ontario Major Junior Hockey League. The OMJHL inaugurates the Bobby Smith Trophy, named after Bobby Smith, awarded to the scholastic player of the year. Twelve teams each played 68 games. The Peterborough Petes won the J. Ross Robertson Cup, defeating the Windsor Spitfires.

Final standings
Note: GP = Games played; W = Wins; L = Losses; T = Ties; GF = Goals for; GA = Goals against; PTS = Points; x = clinched playoff berth; y = clinched first round bye; z = clinched division title & first round bye