| Team name | Location | League | Level | Status |
|---|---|---|---|---|
| Augusta | Augusta, Maine | Maine State League | professional | defunct |
| Augusta Kennebecs | Augusta, Maine | Maine State League | professional | defunct |
| Augusta Senators | Augusta, Maine | Maine State League | professional | defunct |
| Bangor Cubs | Bangor, Maine | Maine State League | professional | defunct |
| Bangor Millionaires | Bangor, Maine | Maine State League | professional | defunct |
| Bangor White Sox | Bangor, Maine | Maine State League | professional | defunct |
| Belfast Pastimes | Belfast, Maine | Maine State League | professional | defunct |
| Biddeford | Biddeford, Maine | Maine State League | professional | defunct |
| Biddeford Orphans | Biddeford, Maine | Maine State League | professional | defunct |
| Lewiston | Lewiston, Maine | Maine State League | professional | defunct |
| Manchester | Manchester, Maine | Maine State League | professional | defunct |
| Pine Tree Capers | Portland, Maine | Maine State League | professional | defunct |
| Portland | Pine Tree, Maine | Maine State League | professional | defunct |
| Portland | Portland, Maine | Maine State League | professional | defunct |
| Portland Blue Sox | Portland, Maine | Maine State League | professional | defunct |
| Rockland | Rockland, Maine | Maine State League | professional | defunct |
| Waterville | Waterville, Maine | Maine State League | professional | defunct |
| York Beach | York Beach, Maine | Maine State League | professional | defunct |