The 2002–03 OHL season was the 23rd season of the Ontario Hockey League. The North Bay Centennials relocated to Saginaw, Michigan, becoming the Saginaw Spirit. Due to the move, several teams changed divisions; the Saginaw Spirit were placed in the west division, the London Knights moved to the midwest division, and the Brampton Battalion moved to the central division. The London Knights moved into the new John Labatt Centre, which replaced the London Ice House. The Tim Adams Memorial Trophy was inaugurated as the MVP of the OHL Cup. Twenty teams each played 68 games. The Mississauga Icedogs qualified for the playoffs for the first time in their existence. The Kitchener Rangers won the J. Ross Robertson Cup, defeating the Ottawa 67's in the final.