
- What: Men’s Senior B Box Lacrosse
- When: May – August
- Where: Ontario, Canada
- Founded: 1999
- Twitter: @OntSeriesLax
- Instagram: ontserieslax
- Facebook: Facebook Page
- YouTube: YouTube Channel
- Website: Official Website
Ontario Series Lacrosse Info
Ontario Series Lacrosse is a men’s Senior B Box Lacrosse league based in Ontario, Canada. The winner on this league goes on the compete for the Presidents Cup which is an annual National Championship.
Contact: Through Their Facebook Page
Newsletter includes Info on
- New leagues, teams and tournaments
- Lacrosse Opportunities
- Connecting Heritage Teams with Players

Six Nations Rivermen – 2019 Ontario Series and Presidents Cup Champions.
Ontario Series Lacrosse – Clare Levack Memorial Trophy Champions
- 2020 – Cancelled
- 2019 – Six Nations Rivermen
- 2018 – Oakville Titans
- 2017 – Six Nations Rivermen
- 2016 – Brooklin Merchants
- 2015 – Six Nations Rivermen
- 2014 – Six Nations Rivermen
- 2013 – St. Catharines Saints
- 2012 – St. Catharines Saints
- 2011 – St. Catharines Saints
- 2010 – Owen Sound Woodsmen
- 2009 – Owen Sound Woodsmen
- 2008 – Owen Sound Woodsmen
- 2007 – Owen Sound Woodsmen
- 2006 – Wellington Aces
- 2005 – Kitchener-Waterloo Kodiaks
- 2004 – Barrie Lakeshores
- 2003 – Owen Sound Woodsmen
- 2002 – Owen Sound Woodsmen
- 2001 – Owen Sound Woodsmen
- 2000 – Brooklin Merchants
Presidents Cup Champions
- 2019 – Six Nations Rivermen
- 2015 – Six Nations Rivermen
- 2013 – St. Catharines Saints
- 2009 – Owen Sound Woodsmen
- 2008 – Owen Sound Woodsmen
- 2006 – Wellington Aces
- 2005 – Kitchener-Waterloo Kodiaks
- 2003 – Kitchener-Waterloo Kodiaks
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