The 26th Arkansas Infantry Regiment (formerly Morgan's Arkansas Infantry Battalion and the 3rd Trans-Mississippi Regiment) was an infantry formation of the Confederate States Army in the Trans-Mississippi Theater of the American Civil War. It was successively commanded by Colonels Asa S. Morgan, Fountain P. Yell, Iverson L. Brooks, and Lieutenant-Colonel A. G. Greenwood.
The regiment participated in the following engagements: