1st Arkansas Cavalry Regiment may refer to:

1st Arkansas Cavalry Regiment (Confederate) 1st Arkansas Cavalry Regiment (Union) 1st Arkansas Mounted Rifles, a Confederate unit 1st Cavalry Regiment, Arkansas State Troops, a Confederate unit

See also 1st Arkansas Cavalry Battalion, a Confederate unit 1st Battalion, Arkansas State Troops, a Confederate cavalry unit 6th Arkansas Cavalry Regiment, sometimes known as the 1st Trans-Mississippi Cavalry Regiment 1st Arkansas Infantry Regiment (disambiguation)