| Team name | Location | League | Level | Status |
|---|---|---|---|---|
| Brantford Red Sox | Brantford, Ontario | Ontario League | professional | defunct |
| Guelph Biltmores | Guelph, Ontario | Ontario League | professional | defunct |
| Hamilton Tigers | Hamilton, Ontario | Ontario League | professional | defunct |
| London Tecumsehs | London, Ontario | Ontario League | professional | defunct |
| St. Catharines Brewers | St. Catharines, Ontario | Ontario League | professional | defunct |
| St. Thomas Blue Sox | St. Thomas, Ontario | Ontario League | professional | defunct |