| 23rd Iowa Infantry Regiment | |
|---|---|
 Iowa state flag | |
| Active | September 19, 1862, to July 26, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Port Gibson Battle of Champion's Hill Battle of Big Black River Bridge Siege of Vicksburg Assault on Fort Blakeley |
The 23rd Iowa Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.