1955-56 Eastern Canada Memorial Cup Playoffs

Champions

 * Northern Ontario: Porcupine Combines
 * Ontario: Toronto Marlboros
 * Ottawa: Ottawa Shamrocks
 * Independent: Montreal Junior Canadiens

Quarter final
Best of 5


 * Ottawa 6 Porcupine 2
 * Ottawa 11 Porcupine 2
 * Series awarded to Ottawa.

Ottawa Shamrocks beat Porcupine Combines

Semi final
Best of 3


 * Montreal 3 Ottawa 2
 * Montreal 6 Ottawa 2

Montreal Junior Canadiens beat Ottawa Shamrocks 2 wins to none.

Final
Best of 7


 * Toronto 3 Montreal 2
 * Toronto 5 Montreal 0
 * Montreal 3 Toronto 2
 * Toronto 3 Montreal 0
 * Montreal 3 Toronto 3
 * Montreal 3 Toronto 2
 * Montreal 4 Toronto 1
 * Toronto 2 Montreal 0

Toronto Marlboros beat Montreal Junior Canadiens 4 wins to 3, 1 tie.

Toronto Marlboros advanced to the 1955-56 Memorial Cup Final.