81st Division

81st Division or 81st Infantry Division may refer to:


 * Infantry divisions :
 * 81st (West Africa) Division (United Kingdom)
 * 81st Division (People's Republic of China)
 * 81st Reserve Division (German Empire)
 * 81st Division (Imperial Japanese Army)
 * 81st Infantry Division (United States)
 * 81st Rifle Division (Soviet Union)
 * 81st Guards Motor Rifle Division (Soviet Union)