1990-91 Eastern Canada Allan Cup Playoffs

These playoffs determined the Eastern Canadian representative in the 1991 Allan Cup final.

Champions

 * Nova Scotia: Dartmouth Mounties
 * Prince Edward Island: Charlottetown Islanders
 * Quebec: Laval Titan

Semi-Final

 * Charlottetown Dartmouth
 * Dartmouth 3 Charlottetown 0
 * Charlottetown 7 Dartmouth 1
 * Dartmouth 5 Charlottetown 3
 * Dartmouth 6 Charlottetown 4
 * Charlottetown 4 Dartmouth 2
 * Charlottetown 4 Dartmouth 1

Charlottetown Islanders beat Dartmouth Mounties 4 wins to 3.

Final
Best of 7


 * Charlottetown 6 Laval 3
 * Laval 3 Charlottetown 2 (2OT)
 * Charlottetown 4 Laval 2
 * Charlottetown 4 Laval 3 (2OT)
 * Charlottetown 6 Laval 2

Charlottetown Islanders beat Laval Titan 4 wins to 1.

Charlottetown Islanders advanced to the 1991 Allan Cup Final.