| Golden Horseshoe Fastball League |
Home of the Golden Horseshoe Fastball League |
| Huron County Fastball League |
An Ontario league with teams in Wingham, Blyth, Goderich, Belmore, Walton, Exeter, Zurich, Brussels, Wroxeter and Fullerton. |
| Intercounty Fastball League |
Intercounty is an Ontario league with teams in Rockwood, Orangeville, Ponsonby, Grand Valley, Puslinch, Arthur, Dundalk, Maryhill and Alma. |
| Mississauga Sportsmen Fastball League |
The MSFL is an 12-team Men's Fastball League playing out of Dunton Fields (Kennedy Road & 401) on Monday nights, and Norton Place Park (West Drive & Clark Blvd.) on Wednesdays and Thursdays. |
| Tri-County Mens Fastball League |
An Ontario league with teams in Woodstock, Innerkip, Ayr, Norwich, Harwood, Simcoe, Ingersoll, Oxford Centre, Hickson, Burgessville, Straffordville, Pt. Burwell, Mt. Elgin and New Dundee. |
| Simcoe Rural Fastball League |
An Ontario league with teams from Toanche, Wyevale, Vasey, Perkinsfield, Uhthoff, Wyebridge and Minesing. |
| St Thomas and District Men's Fastball League |
An Ontario league with teams from Alvinston, Blenheim, Belmont, Glencoe, Morpeth, Shedden and St Thomas. |
| Oshawa and City District Fastball League |
The Oshawa City and District Fastball League is one of the oldest organized softball bodies in Ontario. Teams come from cities that include Aurora, Lake Simcoe, Markham, NewMarket, Oshawa, Scarboroug, Stouffville and Toronto. |
| South Perth Fastball League |
An Ontario league with teams from Hickson, Mitchell, Monkton, Sebringville, Shakespeare, Linwood, Breslau, Bridgeport, Elmira, Kitchener, Waterloo and Harriston/Wellington. |
| NCAA Womans Softball |
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| Flamborough Ladies Fastball League |
We are a non-profit organization that support our own local teams.
This league is comprised of various communities within the Hamilton/Flamborough rural areas, including established teams in Puslinch, Freelton, Sheffield, Lynden, Westover, Millgrove, Greensville, Cambridge, Strabane and Six Nations |
| KW Ladies Fastball League |
The KW Ladies League is dedicated to women who are 17 or older. The league is based in Kitchener, with games being played at three diamonds in the city. Games are played from Monday to Thursday in a double header style, with each team playing two games a week. |
| Glen Cairn Men's Fastball League |
Established in 1971, the GCMFL remains one of the longest-standing men's recreational sporting activities in the former city of Kanata. |
| Blackburn Mens Fastball League |
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| Greater Ottawa Fastball League |
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| Orilla District Fastball League |
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