| 20th Iowa Infantry Regiment | |
|---|---|
 Iowa state flag | |
| Active | August 25, 1862, to July 8, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Equipment | .577 cal. Enfield Rifles |
| Engagements | Battle of Prairie Grove Siege of Vicksburg Battle of Sterling's Plantation Siege of Fort Morgan |
The 20th Iowa Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.