The 1978 Centennial Cup is the eighth Tier II Junior "A" 1978 ice hockey National Championship for the Canadian Junior A Hockey League.
The Centennial Cup was competed for by the winners of the Abbott Cup/Western Canadian Champions and the Eastern Canadian Jr. A Champions.
The finals were hosted by the Guelph Platers in the city of Guelph, Ontario.
The Playoffs
Prior to the Regionals
Merritt Centennials (BCJHL) defeated Richmond Sockeyes (PCJHL) 3-games-to-none
Guelph Platers (OPJHL) defeated Degagne Hurricanes (TBJHL) 4-games-to-none
Pembroke Lumber Kings (CJHL) defeated Thetford Mines Fleur de Lys (QJAHL) 4-games-to-none New Waterford (EJHL) was eliminated in Regionals
MCC Finals
Regional Championships
Manitoba Centennial Cup: Guelph Platers
Abbott Cup: Prince Albert Raiders
Eastern Champions: Guelph Platers
Doyle Cup: Merritt Centennials
Anavet Cup: Prince Albert Raiders
Dudley Hewitt Cup: Guelph Platers
Callaghan Cup: Charlottetown Islanders
Awards
Most Valuable Player: Terry Cullen (Guelph Platers)
All-Star Team
Forward
Terry Cullen (Guelph Platers) George McPhee (Guelph Platers) Brad Tippett(Prince Albert Raiders) Defence Brian McLellan (Guelph Platers) Jim Wilson (Guelph Platers) Goal Brian Hayward (Guelph Platers)