1970-71 MMJHL season

This is the 1970-71 Manitoba Major Junior Hockey League season. This is the league's first season.

Jack McKenzie Trophy Playoffs
Best of 3
 * Quarterfinals''
 * Fort Garry Blues - Portage Terriers 2:0 (5:2, 4:2)
 * St. James Centennials - Stonewall
 * Semifinals

Best of 5
 * Charleswood Hawks - Fort Garry Blues 3:0 (5:3 in game 3)
 * River Heights Cardinals - St. James Centennials 3:2 (5:7, W:L, 7:8 OT, 5:1, 5:4)
 * Final

Best of 7
 * River Heights Cardinals - Charleswood Hawks 3:2 through 5 games (6:3, L:W, 5:2, 3:2, 1:5, later games ?)

Won by River Heights Cardinals