Ontario Champions
OSL Clare Levack Trophy winners
1964 - Ohsweken Warriors
1965 - Fergus Thistles
1966 - Fergus Thistles
1967 - Brantford Supertests
1968 - Brantford Supertests
1969 - Wallaceburg Red Devils
1970 - Windsor Clippers
1971 - Windsor Warlocks
1972 - Brampton Excelsiors
1973 - Windsor Warlocks
1974 - 1977 - League Folded
1978 - Orangeville Northmen
1979 - Owen Sound North Stars
1980 - Owen Sound North Stars
1981 - Orangeville Northmen
1982 - Orangeville Northmen
1983 - Orangeville Northmen
1984 - Orangeville Northmen
1985 - Orangeville Northmen
1986 - Fergus Thistles
1987 - Fergus Thistles
1988 - Fergus Thistles
1989 - Owen Sound North Stars
1990 - Owen Sound North Stars
1991 - Owen Sound North Stars
1992 - 1999 - League Folded
2000 - Brooklin Merchants
2001 - Owen Sound Woodsmen
2002 - Owen Sound Woodsmen
2003 - Owen Sound Woodsmen
2004 - Barrie Lakeshores
2005 - Kitchener-Waterloo Kodiaks
2006 - Wellington Aces
2007 - Owen Sound Woodsmen
2008 - Owen Sound Woodsmen
2009 - Owen Sound Woodsmen
2010 - Owen Sound Woodsmen
2011 - St.Catharines Saints
2012 - St.Catharines Saints
2013 - St.Catharines Saints
2014 - Six Nations Rivermen
2015 - Six Nations Rivermen
2016 - Brooklin Merchants
2017 - Six Nations Rivermen
2018 - Oakville Titans
2019 - Six Nations Rivermen
2020 - No Season (COVID-19 Pandemic)
2021 - No Season (COVID-19 Pandemic)
2022 - Six Nations Rivermen
2023 - Oakville Rock
LACROSSE CANADA PRESIDENTS CUP WINNERS
1964 - Ohsweken Warriors
1965 - Fergus Thistles
1967 - Brantford Supertests
1968 - Brantford Supertests
1970 - Windsor Clippers
1971 - Windsor Warlocks
1972 - Brampton Excelsiors
1973 - Windsor Warlocks
1979 - Owen Sound North Stars
1980 - Owen Sound North Stars
1981 - Orangeville Northmen
1982 - Orangeville Northmen
1984 - Orangeville Northmen
1986 - Fergus Thistles
1987 - Fergus Thistles
1988 - Fergus Thistles
1989 - Owen Sound North Stars
1990 - Fergus Thistles
1991 - Owen Sound North Stars
1992 - Fergus Thistles
2003 - Kitchener-Waterloo Kodiaks
2005 - Kitchener-Waterloo Kodiaks
2006 - Wellington Aces
2008 - Owen Sound Woodsmen
2009 - Owen Sound Woodsmen
2013 - St. Catharines Saints
2015 - Six Nations Rivermen
2019 - Six Nations Rivermen