This is a list of Canadian Junior Seasons prior to the division of Junior A in 1970. All leagues, sanctioned or not are included.
- 1969-70 - AJHL, BCJHL, CJHL, MJAHL, MJHL, NBJHL, NOJHA, OHA, QMJHL, SJHL, TBJHL, WCHL, WOJAHL*
- 1968-69 - AJHL, BCJHL, CJHL, MJAHL, MJHL, NOJHA, OHA, SJHL, TBJHL, WCHL*, WOJAHL*
- 1967-68 - AJHL, BCJHL, CJHL, CMJHL, MJHL, NOJHA, OHA, TBJHL, WCJHL*
- 1966-67 - AJHL, CJHL, CMJHL*, MJHL, NOJHA, OHA, OJHL, PCJHL, TBJHL
- 1965-66 - AJHL, CJHL, MJHL, NOJHA, OHA, OJHL, PCJHL, SJHL, TBJHL
- 1964-65 - AJHL, CJHL, MJHL, NOJHA, OHA, OJHL, PCJHL, SJHL, TBJHL
- 1963-64 - MJHL OHDJHL, OJHL, NOJHA, OHA, PCJHL, SJHL, TBJHL
- 1962-63 - MetJHL, MJHL OHDJHL, OMJHL, NOJHA, OHA, PCJHL, SJHL, TBJHL
- 1961-62 - MetJHL, MJHL OHAJHL, OMJHL, OHA, SJHL, TBJHL
- 1960-61 - IPJHL, MJHL, OHA, SJHL, TBJHL
- 1959-60 -
- 1958-59 -
- 1957-58 -
- 1956-57 -
- 1955-56 -
- 1954-55 -
- 1953-54 -
- 1952-53 -
- 1951-52 -
- 1950-51 -
(*) denotes unsanctioned league.