| 171st Ohio Infantry Regiment | |
|---|---|
| Active | May 7, 1864, to August 20, 1864 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Cynthiana |
The 171st Ohio Infantry Regiment, sometimes 171st Ohio Volunteer Infantry (or 171st OVI) was an infantry regiment in the Union Army during the American Civil War.