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)