Colonels
- Colonel Charles Hamilton - May 11, 1861, to August 10, 1861 - Promoted to brigadier general.
- Colonel Thomas H. Ruger - August 10, 1861, to November 29, 1862 - Promoted to brigadier general.
- Colonel William Hawley - March 10, 1863, to July 18, 1865
Read more about this topic: 3rd Wisconsin Volunteer Infantry Regiment