| 25th Ohio Infantry Regiment | |
|---|---|
 Ohio state flag | |
| Active | June 28, 1861, to June 18, 1866 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Cheat Mountain Battle of Greenbrier River Battle of Camp Alleghany Battle of McDowell Battle of Cross Keys Battle of Cedar Mountain Battle of Freeman's Ford Second Battle of Bull Run Battle of Chancellorsville Battle of Gettysburg Battle of Honey Hill Battle of Tulifinny Battle of Dingle's Mill |
The 25th Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.