12th Cavalry may refer to:
Divisions 12th Cavalry Division (Russian Empire) 12th Cavalry Division (Soviet Union)
Brigades 12th Cavalry Brigade (British Indian Army) 12th Indian Cavalry Brigade
Regiments 12th Bengal Cavalry, British Indian Army 12th Cavalry (Frontier Force), Pakistan 12th Cavalry Regiment (United States) 12th Reserve Cavalry Regiment, Britain
American Civil War regiments Union Army 12th Illinois Cavalry Regiment 12th Indiana Cavalry Regiment 12th Kentucky Cavalry Regiment 12th Missouri Cavalry Regiment 12th Ohio Cavalry Regiment 12th Pennsylvania Cavalry Regiment 12th Tennessee Cavalry Regiment
Confederate Army 12th Arkansas Cavalry Regiment 12th Texas Cavalry Regiment 12th Virginia Cavalry Regiment
Battalions 12th (Ayr and Lanark Yeomanry) Battalion, Royal Scots Fusiliers
See also 12th Division (disambiguation) 12th Brigade (disambiguation) 12th Regiment (disambiguation) 12th (disambiguation)