| Abbey Oaks Slo Pitch, Men's Slo Pitch League | Oakville |
| Acton Soccer Club | Acton |
| Aldershot Community Recreation Association | Burlington |
| Average Joe Sports Club, Co-ed Recreational Sports Leagues | Oakville |
| BaseballMilton | Milton |
| Brookville Masters Slo Pitch League | Milton |
| Burlington Amateur Softball Association | Burlington |
| Burlington Ball Hockey League | Burlington |
| Burlington Basketball | Burlington |
| Burlington Centaurs Rugby Football Club | Burlington |
| Burlington Girls Hockey Club | Burlington |
| Burlington Lions-Optimist Minor Hockey Association | Burlington |
| Burlington Mens Hockey League | Burlington |
| Burlington Minor Ball Hockey League | Burlington |
| Burlington Minor Football Association | Burlington |
| Burlington Minor Lacrosse Association | Burlington |
| Burlington Organized Minor Baseball Association | Burlington |
| Burlington Pickleball Association, Athletic Association | Burlington |
| Burlington Soccer Club | Burlington |
| Burlington Vintage Baseball League | Burlington |
| Burlington Womens Recreational Soccer League | Burlington |
| Force Soccer Academy | Burlington |
| Georgetown Ladies Powderpuff League | Georgetown |
| Georgetown Slopitch League | Georgetown |
| Georgetown Soccer Club | Georgetown |
| Glen Abbey Ladies Slo Pitch League | Oakville |
| Glen Abbey Slo-Pitch League | Oakville |
| Golden Horseshoe Disabled Sports Association, Vipers Wheelchair Basketball | Burlington |
| Golden Horseshoe Touch Football Association | Burlington |
| Halton and Oakville Men's Hockey League | Oakville |
| Halton Hawks Girls Fastpitch Association | Halton Hills |
| Halton Hills Minor Ball Hockey League | Halton Hills |
| Halton Hills Minor Baseball Association | Halton Hills |
| Halton Hills Minor Hockey | Halton Hills |
| Halton Hills Minor Lacrosse Association | Georgetown |
| Halton Hills Pickleball Association, Athletic Association | Halton Hills |
| Milton Girls Softball | Milton |
| Milton Ladies Slo Pitch, Recreational Softball League | Milton |
| Milton Ladies Softball League | Milton |
| Milton Minor Ball Hockey League | Milton |
| Milton Minor Hockey Association | Milton |
| Milton Minor Lacrosse Association | Milton |
| Milton Pickleball Association | Milton |
| Milton Youth Soccer Club | Milton |
| North Central Community Association | Burlington |
| North Halton Girls Hockey Association | Georgetown |
| Oakville Girls Softball Association | Oakville |
| Oakville Hornets Girls Hockey Association | Oakville |
| Oakville Little League Baseball | Oakville |
| Oakville Minor Baseball Association | Oakville |
| Oakville Minor Lacrosse Association | Oakville |
| Oakville Pickleball Association, Athletic Association | Oakville |
| Oakville Rangers Hockey Club | Oakville |
| Oakville Senior Ladies Basketball League | Oakville |
| Oakville Soccer Club | Oakville |
| Ringette Association of Burlington | Burlington |
| Slo-Pitch Ontario Association, St Catharines | St Catharines |
| Sport Oakville | Oakville |
