8th Cavalry may refer to:
Divisions
8th Cavalry Division (German Empire), a unit of the German Army during the First World War 8th SS Cavalry Division Florian Geyer, a unit of the Waffen-SS during the Second World War
Brigades
8th (Lucknow) Cavalry Brigade, a unit of the British Indian Army during the First World War 8th Cavalry Brigade (United Kingdom), a unit of the British Army during the First World War
Regiments
8th Cavalry Regiment, a unit of the United States Army
8th Cavalry (British Indian Army) of the British Indian Army from 1846 to 1922, now part of the 3rd Cavalry regiment of the Indian Army 8th Light Cavalry, a unit of the Indian Army from 1922 onwards 8th Ohio Cavalry, a Union regiment during the American Civil War 8th Regiment Illinois Volunteer Cavalry, a Union regiment during the American Civil War 8th Texas Cavalry, popularly known as Terry's Texas Rangers, a Confederate regiment during the American Civil War 8th Virginia Cavalry, a Confederate regiment during the American Civil War