The 4th Arkansas Infantry (August 17, 1861 – April 26, 1865) was a Confederate Army infantry regiment from the state of Arkansas during the American Civil War. The 4th Arkansas served throughout the war in the western theater, seeing action in the Kentucky, Tennessee and Georgia campaigns. Following its depletion in numbers the regiment was consolidated several times with other Arkansas regiments, finally merging in 1865 into the 1st Arkansas Consolidated Mounted Rifles.