1969-70 Eastern Canada Memorial Cup Playoffs

Champions

 * Northern Ontario: Sault Ste Marie Greyhounds
 * Ontario: Montreal Junior Canadiens
 * Ottawa: Ottawa M&W Rangers
 * Quebec: Quebec Remparts
 * Maritimes: Charlottetown Islanders

Quarter final
Best of 7


 * Charlottetown 7 Ottawa 5
 * Charlottetown 3 Ottawa 2
 * Ottawa 4 Charlottetown 3
 * Charlottetown 5 Ottawa 3
 * Charlottetown 2 Ottawa 1

Charlottetown Islanders beat Ottawa M&W Rangers 4 wins to 1.

Semi finals
Best of 7


 * Montreal 6 Sault Ste Marie 2
 * Sault Ste Marie 5 Montreal 4
 * Montreal 10 Sault Ste Marie 1
 * Montreal 9 Sault Ste Marie 3
 * Montreal 20 Sault Ste Marie 3

Montreal Junior Canadiens beat Sault Ste Marie Greyhounds 4 wins to 1.


 * Charlottetown 3 Quebec 1
 * Charlottetown 6 Quebec 4
 * Quebec 6 Charlottetown 2
 * Quebec 4 Charlottetown 1
 * Quebec 10 Charlottetown 1
 * Quebec 5 Charlottetown 2

Quebec Remparts beat Charlottetown Islanders 4 wins to 2.

Final
Best of 5


 * Montreal 7 Quebec 4
 * Montreal 9 Quebec 7
 * Montreal 7 Quebec 1

Montreal Junior Canadiens beat Quebec Remparts 3 wins to none.

Montreal Junior Canadiens advanced to the 1969-70 Memorial Cup Final.