St. Michael's College School is a private Roman Catholic school for boys in Toronto, Ontario, Canada. Founded in 1852 by the Basilian Fathers, it offers instruction in grades 7 to 12, and is the only private Roman Catholic school for boys of this age in Ontario.

It is perhaps best known as a producer of hockey players, even though from 1961 to 1996 it did not participate in major junior hockey. Over 150 St. Michael's players have played in the National Hockey League, including the following members of the Hockey Hall of Fame: Bobby Bauer, Gerry Cheevers, Red Kelly, Dave Keon, Ted Lindsay, Frank Mahovlich, Reg Noble, Joe Primeau. The school's top team, the St. Michael's Majors, has won the Memorial Cup four times.