1977-78 OHA Junior C Season

This is a list of 1977-78 Ontario Hockey Association Junior C Standings

Leagues

 * 1977-78 COJCHL Season
 * 1977-78 GLJHL Season
 * 1977-78 GBJCHL Season
 * 1977-78 MOJCHL Season
 * 1977-78 NDJCHL Season
 * 1977-78 QSLJCHL Season
 * 1977-78 WOJCHL Season

Provincials

 * 1978 Clarence Schmalz Cup