These playoffs determined the Eastern Canadian representative in the 1977 Allan Cup final.
Champions[]
Semi-Final[]
Best of 5
- Shediac 7 St. John's 4
- St. John's 11 Shediac 4
- St. John's 6 Shediac 5
- St. John's 2 Shediac 0
The final game was not continued after the first period. The ice was in poor condition due to issues with ice making machine and Shediac refused to keep playing, so game was awarded to St. John's.
Final[]
Best of 5
- Brantford 7 St. John's 1
- Brantford 7 St. John's 4
- St. John's 9 Brantford 3
- St. John's 2 Brantford 1
- Brantford 5 St. John's 3
Brantford Alexanders beat St. John's Capitals 3 wins to 2.
Brantford Alexanders advanced to the 1977 Allan Cup Final.