| John Henry Heitmann | |
| Office1: | 25th Mayor of Columbus |
| Term Start1: | 1875 |
| Term End1: | 1878 |
| Predecessor1: | James G. Bull |
| Successor1: | Gilbert G. Collins |
| Office2: | Member of the Ohio House of Representatives |
| Term Start2: | 1874 |
| Term End2: | 1876 |
| Party: | Democratic |
| Profession: | Teacher Attorney State Legislator Mayor |
| Birth Date: | 11 September 1842 |
| Birth Place: | Hanover, Germany |
| Spouse: | Ottilie Petterly |
| Children: | Albert H. |
John Henry Heitmann (September 11, 1842 – March 26, 1894) was the 25th mayor of Columbus, Ohio and the 22nd person to serve in that office. He served Columbus for two terms. His successor, Gilbert G. Collins, took office in 1879. He died on March 26, 1894.