The Thunder Bay North Stars are a junior A ice hockey team from Thunder Bay, Ontario, Canada. They are a member of the Superior International Junior Hockey League.

The Superior International Junior Hockey League (SIJHL) is a junior A ice hockey league and a member of the Canadian Junior Hockey League (CJHL) and Hockey Canada. The league operates in the Canadian province of Ontario and the U.S. states of Minnesota and Wisconsin. Winners of the SIJHL playoffs compete for the Dudley Hewitt Cup against the winners of the Ontario Junior Hockey League and the Northern Ontario Junior Hockey League. The winner of the Dudley Hewitt Cup then moves on to compete for the Centennial Cup, the Canadian Junior A championship.