1972-73 MMJHL season

This is the 1972-73 Manitoba Major Junior Hockey League season. This is the league's third season.

Membership Changes

 * The East Kildonan Knights, West Kildonan Nev Knights, Selkirk, and Transcona Titans joined the league.
 * The Stonewall team does not return after dropping out during the 1971-72 season.
 * Portage la Prairie withdrew

Jack McKenzie Trophy Playoffs
Won by St. Boniface Riels