The 3rd Infantry, Arkansas State Troops (1861) was an Arkansas State infantry regiment that served during the American Civil War. The regiment was designated as the 2nd Infantry, Arkansas State Troops, by the State Military Board, but it was named the 3rd Arkansas by Brigadier General Nicholas Bartlett Pearce, Commander, 1st Division, Provisional Army of Arkansas. The regiment is generally referred to as the "3rd Regiment, Arkansas State Troops", or "Gratiot's Regiment" in contemporary accounts. This unit is distinguished from the 3rd Arkansas Infantry Regiment which served in the Eastern Theater of War in the Confederate Army of Northern Virginia. The unit is also distinguished from a later state organization known as Adams' 3rd Arkansas State Troops, which was organized in 1862 and parti