| Abbey Oaks Slo Pitch, Men's Slo Pitch League | Oakville |
| Brookville Masters Slo Pitch League | Milton |
| Burlington Amateur Sports Leagues | Burlington |
| Burlington Vintage Baseball League | Burlington |
| Georgetown Ladies Powderpuff League | Georgetown |
| Georgetown Slopitch League | Georgetown |
| Glen Abbey Ladies Slo Pitch League | Oakville |
| Glen Abbey Slo-Pitch League | Oakville |
| Halton Hills Men's Slopitch League | Georgetown |
| Milton Ladies Slo Pitch, Recreational Baseball League | Milton |
| Milton Ladies Softball League | Milton |
| Milton Old Friends League, Over 50 Slo-Pitch League | Milton |
| Milton Red Sox Senior Baseball Club | Milton |
| Oakville Masters Mens Slo-Pitch League | Oakville |
| Palermo Hammer Fastball Club | Burlington |
| Slow Pitch Softball Leagues, Burlington | Burlington |
