Michigan–Ontario League
| Classification | Class B (1919–1926) |
|---|---|
| Sport | Minor League Baseball |
| First season | 1919 |
| Ceased | June 13, 1926 |
| Replaced by | Michigan State League |
| President | Joseph S. Jackson (1919) George H. Maines (1920–1921) Thomas J. Halligan (1922–1926) |
| No. of teams | 13 |
| Country | United States of America, Canada |
| Most titles | 2 London Tecumsehs Bay City Wolves |
| Related competitions | Central League |
Michigan–Ontario League was the name of an American professional baseball league. It operated seven full seasons and part of an eighth from 1919 to 1926.
In 1926, the Michigan–Ontario League merged with the Central League to form the Michigan State League, which played only the one season.