| 4th Wisconsin Cavalry Regiment | |
|---|---|
 | |
| Active | August 22, 1863 – May 2, 1866 |
| Country | United States |
| Allegiance | Union |
| Branch | Cavalry |
| Size | Regiment |
| Engagements | American Civil War |
| Commanders | |
| Colonel | Frederick A. Boardman |
| Colonel | Joseph Bailey |
| Lt. Colonel | Nelson F. Craigue |
The 4th Wisconsin Cavalry Regiment was a volunteer cavalry regiment that served in the Union Army during the American Civil War. Earlier in the war, it had been organized as the 4th Wisconsin Infantry Regiment.