1988-89 OHL season

The 1988–89 OHL season was the ninth season of the Ontario Hockey League. Fifteen teams each played 66 games. The Peterborough Petes won the J. Ross Robertson Cup, defeating the Niagara Falls Thunder. The Hamilton Steelhawks move to Niagara Falls becoming the Niagara Falls Thunder. The Kingston Canadians rename themselves to the Kingston Raiders.

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