| 3rd West Virginia Infantry Regiment | |
|---|---|
 Flag of West Virginia | |
| Active | June, 1861 to January 26, 1864 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | American Civil War 1861: Battle of Cheat Mountain, Skirmish at Hanging Rock Pass |
| Commanders | |
| Lt. Colonel | Francis Thompson |
The 3rd West Virginia Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It fought in Virginia and West Virginia. On May 23, 1863, it was converted to a mounted infantry by Brigadier General William W. Averell. The regiment was immediately sent to a camp for instruction and supplied. On January 26, 1864, it was reorganized as the 6th West Virginia Volunteer Cavalry Regiment.