John E. McMahon | |
|---|---|
 McMahon while commanding the 5th Infantry Division c. 1918 | |
| Born | 8 December 1860 Buffalo, New York, United States |
| Died | 28 January 1920 (aged 59) Princeton, New Jersey, United States |
| Buried | |
| Allegiance |  United States |
| Branch |  United States Army |
| Years of service | 1886–1919 |
| Rank |  Major General |
| Unit |  Field Artillery Branch |
| Commands | |
| Battles / wars | |
| Awards | |
| Alma mater | |
John Eugene McMahon (8 December 1860 – 28 January 1920) was a major general in the United States Army who commanded the 5th Infantry Division during World War I.
A native of New York, McMahon