104th Regiment

104th Regiment or 104th Infantry Regiment may refer to:


 * 104th Infantry Regiment (United States), a unit of the United States Army from Springfield, Massachusetts
 * 104th Ohio Infantry, a unit of the United States Army during the American Civil War
 * 104th Training Aviation Regiment, a unit of the Yugoslav Air Force
 * 104th Operational Maneuvers Regiment, a unit of the Algerian Army
 * 104th Aviation Regiment, a unit of the United States Army
 * 104th Guards Air Assault Regiment, a unit of the Russian Airborne Forces
 * Several infantry regiments of the British Army listed at 104th Regiment of Foot (disambiguation)