The 2016–17 OHL season was the 37th season of the Ontario Hockey League, in which twenty teams played 68 games each according to the regular season schedule, from September 21, 2016 to March 21, 2017. The playoffs began on March 23, 2017 and ended on May 12. The Erie Otters won the J. Ross Robertson Cup for the second time in franchise history, and the first time since 2002, as they defeated the Mississauga Steelheads in five games to represent the OHL at the 2017 Memorial Cup held at the WFCU Centre in Windsor, Ontario. The Windsor Spitfires also qualified for the tournament as the host team.