| Season | Gold | Silver | Bronze |
| 2023-24 | Conestoga | Humber | Seneca |
| 2022-23 | Humber* | Seneca | George Brown |
| 2021-22 | Humber* | George Brown | Seneca |
| 2019-20 | Humber | Fanshawe | Seneca |
| 2018-19 | Humber* | Sheridan | Fanshawe |
| 2017-18 | Durham | Algonquin | Humber |
| 2016-17 | Humber* | Algonquin | George Brown |
| 2015-16 | Humber* | Algonquin | Fanshawe |
| 2014-15 | Algonquin | Humber | Sheridan* |
| 2013-14 | Humber* | Algonquin | Sheridan |
| 2012-13 | Humber* | Seneca | Sheridan |
| 2011-12 | Humber | Sheridan | Conestoga |
| 2010-11 | Humber | Sheridan | Seneca |
| 2009-10 | Algonquin | Seneca* | Fanshawe |
| 2008-09 | Algonquin | Sheridan | Seneca |
| 2007-08 | Algonquin | George Brown | Seneca |
| 2006-07 | Algonquin* | Humber | George Brown |
| 2005-06 | Algonquin | Seneca | Humber |
| 2004-05 | Algonquin | Humber | Mohawk |
| 2003-04 | Seneca | Algonquin | Fanshawe |
| 2002-03 | Algonquin* | Seneca | Humber |
| 2001-02 | Humber* | Algonquin | Fanshawe |
| 2000-01 | Humber | St. Clair | Fanshawe |
| 1999-00 | Algonquin | Humber | Durham |
| 1998-99 | Humber | Centennial | Conestoga |
| 1997-98 | Durham | Humber | Fanshawe |
| 1996-97 | Fanshawe | Durham | Algonquin |
| 1995-96 | Humber* | Mohawk | Durham |
| 1994-95 | Humber | Mohawk | Durham |
| 1993-94 | Fanshawe | Seneca | Mohawk |
| 1992-93 | Sheridan | Mohawk | St. Clair |
| 1991-92 | Seneca | Centennial | Conestoga |
| 1990-91 | Sheridan | Mohawk | Seneca |
| 1989-90 | Mohawk* | Durham | Centennial |
| 1988-89 | Durham | Seneca | Mohawk |
| 1987-88 | Seneca | Durham | Fleming-P |
| 1986-87 | Seneca* | Mohawk | Durham |
| 1985-86 | Seneca* | Sheridan | Durham |
| 1984-85 | Sheridan | Durham | Seneca* |
| 1983-84 | Seneca | Fleming-P | Sheridan |
| 1982-83 | Seneca | Humber | Durham |
| 1981-82 | Mohawk | Seneca | Durham |
| 1980-81 | Durham | Fleming-P | Seneca |
| 1979-80 | Conestoga | George Brown | Durham |
| 1978-79 | Fanshawe | Sheridan | St. Lawrence-K |
| 1977-78 | Fanshawe | Sheridan | St. Lawrence-K |
| 1976-77 | Algonquin | Humber | Centennial |
| 1975-76 | Algonquin | Centennial | Humber |
| 1974-75 | Fanshawe | St. Lawrence-K | |
| 1973-74 | George Brown | ||
| 1972-73 | George Brown | Seneca | |
| 1971-72 | Mohawk | Fanshawe | |
| 1970-71 | Mohawk | Seneca | |
| 1969-70 | Mohawk | Seneca | |
| 1968-69 | Seneca | St. Clair | |
| *Won National Championship | |||
| Other National Champions from OCAA include: Durham 2019-20 |
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