1939-40 OHA Junior A Season

This is the 1939-40 season of the Ontario Hockey Association's Junior A series:

Standings
Note: University of Toronto withdrew on Feb. 14.

Semi Finals
Best of 3

Oshawa Generals beat Toronto Young Rangers 2 wins to none.

Toronto Marlboros beat Guelph Biltmores 2 wins to 1.

Final
Best of 5

Oshawa Generals beat Toronto Marlboros 3 wins to 2.

Oshawa Generals advanced to the 1939-40 Eastern Canada Memorial Cup Playoffs.