John M. Callahan | |
|---|---|
| Chair of the Democratic Party of Wisconsin | |
| In office 1925–1927 | |
| Personal details | |
| Resting place | Holy Cross Cemetery, Milwaukee, Wisconsin, U.S. |
| Nationality | American |
| Occupation | Politician |
John M. Callahan was an American politician who served as chairman of the Democratic Party of Wisconsin from 1925 to 1927.