| 42nd Wisconsin Infantry Regiment | |
|---|---|
 | |
| Active | September 7, 1864 – June 20, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Size | Regiment |
| Engagements | American Civil War |
| Commanders | |
| Colonel | Ezra T. Sprague |
| Lt. Col. | W. Wallace Botkin |
The 42nd Wisconsin Infantry Regiment was a volunteer infantry regiment that served in the Union Army during the American Civil War.