The Adams' Arkansas Infantry Regiment was a Confederate Army infantry regiment which existed during the American Civil War (1862–1865). The regiment was officially designated by the state military board as the 3rd Regiment, Northwest Division, District of Arkansas. There were two other Arkansas infantry regiments that were designated as the 3rd Arkansas during the Civil War: the 3rd Arkansas Infantry Regiment, which spent the entire war in the Eastern Theater of Operations assigned to the Confederate Army of Northern Virginia and the 3rd Arkansas State Troops which was assigned to General N. B. Pearce's 1st Division, Provisional Army of Arkansas, and disbanded following the Battle of Wilson's Creek.