12th Division

12th Division may refer to:

Infantry divisions

 * 12th Division (Australia)
 * 12th Reserve Division (German Empire), a unit of the Imperial German Army in World War I
 * 12th Infantry Division (Germany), a German military unit that fought during World War II
 * 12th Mechanized Infantry Division (Greece), a Greek unit based at Alexandroupoli, Thrace
 * 12th Infantry Division Sassari (Kingdom of Italy)
 * 12th Indian Division – British Indian Army during World War I
 * 12th Infantry Division (India)
 * 12th Division (Imperial Japanese Army), was an infantry division in the Imperial Japanese Army
 * 12th Division (North Korea), was a division of the Korean People's Army
 * 12th Infantry Division (Pakistan), is a Pakistani Army infantry division currently based in Murree, Punjab
 * 12th Infantry Division (Poland), was a tactical unit of the Polish Army in the interbellum period
 * 12th Amurskaya Rifle Division, was a military formation of the Red Army during World War II
 * 12th (Eastern) Division, was a division raised by the British Army during the First World War
 * 12th (Eastern) Infantry Division, was a division raised by the British Army during the Second World War
 * 12th Infantry Division (South Korea), infantry division of the South Korea Army
 * 12th Division (United States), infantry division of the United States Army, active in 1918–1919
 * Philippine Division (United States), also designated as the US 12th Infantry Division

Armoured divisions

 * 12th SS Panzer Division Hitlerjugend (Germany)
 * 12th Armored Division (United States)

Aviation divisions

 * 12th Air Division (United States)