The Niagara IceDogs are a major junior ice hockey team in the Ontario Hockey League based in St. Catharines, Ontario, Canada. The franchise was originally known as the Mississauga IceDogs and founded in 1996. The team was relocated to St. Catharines and played its inaugural season in the Niagara region during the 2007–08 OHL season after nine seasons in Mississauga. In 2022, the team was acquired by majority owner Darren DeDobbelaer and minority owner Wayne Gretzky.