Henry E. Maynadier | |
|---|---|
 A portrait of Maynadier during his military service | |
| Birth name | Henry Eveleth Maynadier |
| Born | 1830 Virginia, U.S. |
| Died | (aged 38) Savannah, Georgia, U.S. |
| Buried | Oak Hill Cemetery Washington, D.C., U.S. |
| Service |  United States Army |
| Years of service | 1851–1866 |
| Service number | Colonel Bvt. Major General |
| Unit | Corps of Topographical Engineers 10th U.S. Infantry Regiment 12th U.S. Infantry Regiment |
| Commands | 5th U.S. Volunteer Infantry Regiment |
| Battles / wars | American Civil War Red Cloud's War |
| Alma mater | United States Military Academy |
| Spouse(s) | Julia Barker |
| Children | 7 |
Henry Eveleth Maynadier (1830 – December 3, 1868) was a United States Army officer known for his field work in Montana during the Raynolds Expedition and his work to set up peace talks with the Oglala and Brulé tribes at Fort Laramie in 1866. He served in the Union Army during the American Civil War.