List of Mississippi Union Civil War units

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This is a list of units from Mississippi that served in the Union during the American Civil War. Only a single unit of white Union troops was raised within the state, along with several regiments of African-American volunteers, eventually becoming part of the United States Colored Troops. The list of Confederate Mississippi units is shown separately.

• 1st Battalion, Mississippi Mounted Rifles (Union)
• 1st Mississippi Cavalry Regiment (African Descent) – redesignated 3rd U.S. Colored Cavalry Regiment
• 1st Mississippi Heavy Artillery Regiment (African Descent) – redesignated 5th U.S. Colored Heavy Artillery Regiment
• 2nd Mississippi Heavy Artillery Regiment (African Descent) – redesignated 6th U.S. Colored Heavy Artillery Regiment
• 1st Mississippi Infantry Regiment (African Descent) – redesignated 51st U.S. Colored Infantry Regiment
• 2nd Mississippi Infantry Regiment (African Descent) – redesignated 52nd U.S. Colored Infantry Regiment
• 3rd Mississippi Infantry Regiment (African Descent) – redesignated 53rd U.S. Colored Infantry Regiment
• 4th Mississippi Infantry Regiment (African Descent) – redesignated 66th United States Colored Infantry Regiment
• 5th Mississippi Infantry Regiment (African Descent) – organization not completed
• 6th Mississippi Infantry Regiment (African Descent) – redesignated 58th U.S. Colored Infantry Regiment

• Lists of American Civil War Regiments by State
• Mississippi in the American Civil War
• Southern Unionists
• United States Colored Troops

• Dyer, Frederick H. (1959). A Compendium of the War of the Rebellion. New York and London. Thomas Yoseloff, Publisher. LCCN 59-12963
• Mississippi Union Regimental Index at The Civil War Archive
• 1st Mississippi Mounted Rifles: Mississippi’s Union Battalion in the Civil War