| Unit Name: | 3rd Louisiana Regiment Native Guard Infantry |
| Dates: | 1862 - 1865 |
| Country: | United States of America |
| Allegiance: |  United States |
| Branch: | Union Army, American Civil War |
| Type: | Infantry |
| Battles: | Siege of Port Hudson Red River Campaign Battle of Mansura Battle of Yellow Bayou |
| Notable Commanders: | Col John A. Nelson |
The 3rd Louisiana Regiment Native Guard Infantry was a regiment in the Union Army during the American Civil War.[1]
The unit was organized at New Orleans, Louisiana, November 24, 1862, and remained there until May 1863. Between May and July, the regiment was involved in the Siege of Port Hudson.
The designation was changed to 3rd Regiment, Corps d'Afrique June 6 at Port Hudson.[2] The Confederate garrison at Port Hudson surrendered on July 9, five days after the fall of Vicksburg farther up the Mississippi River.
The unit designation was changed once again to the 75th United States Colored Troops on April 4, 1864.[3] The 75th participated in the Red River Campaign with engagements at the Battle of Mansura on May 16 and the Battle of Yellow Bayou on May 18.
The regiment remained on duty in southern Louisiana for the remainder of the war and mustered out November 25, 1865.