John W. Haarer | |
|---|---|
 | |
| Treasurer of Michigan | |
| In office 1913–1916 | |
| Governor | Woodbridge N. Ferris |
| Preceded by | Albert Sleeper |
| Succeeded by | Samuel Odell |
| Personal details | |
| Born | April 21, 1876 Ann Arbor, Michigan, US |
| Died | April 24, 1941 (aged 65) Jackson, Michigan, US |
| Political party | Republican |
John W. Haarer (April 21, 1876 – April 24, 1941) served as the Treasurer of Michigan.