1978 Clarence Schmalz Cup

These are the 1977-78 playoffs for the Clarence Schmalz Cup, the Ontario Hockey Association's Junior C championship:

Playoffs
Quarter-final
 * Alliston Hornets defeated Penetang Kings 4-games-to-2
 * Bowmanville Eagles defeated Gananoque G-Men 4-games-to-none
 * Essex 73's defeated Listowel Cyclones 4-games-to-1

Semi-final
 * Essex 73's defeated Flamborough Sabres 4-games-to-none
 * Bowmanville Eagles defeated Alliston Hornets 4-games-to-3

Final
 * Essex 73's defeated Bowmanville Eagles 4-games-to-1