Jacob Ammen | |
|---|---|
 Jacob Ammen photo taken between 1861 and 1865 | |
| Born | January 7, 1806 Fincastle, Virginia, US |
| Died | February 6, 1894 (aged 87) Lockland, Ohio, US |
| Place of burial | Spring Grove Cemetery, Cincinnati, Ohio, US |
| Allegiance | United States of America Union |
| Service/ | United States Army Union Army |
| Years of service | 1831–1837, 1861–1865 |
| Rank | Brigadier General |
| Commands | 4th Division, XXIII Corps Camp Douglas |
| Battles/wars | American Civil War |
| Relations | Daniel Ammen |
| Other work | College professor, civil engineer |
Jacob Ammen (January 7, 1806 – February 6, 1894) was a college professor, civil engineer, and a general in the Union Army during the American Civil War. His younger brother, Daniel Ammen, was an admiral in the United States Navy.