11th Division or 11th Infantry Division may refer to:
Infantry divisions
- 11th Division (Australia)
- 11th Infantry Division (Bangladesh)
- 11th Division (German Empire)
- 11th Reserve Division (German Empire)
- 11th Bavarian Infantry Division, a unit of the Royal Bavarian Army, part of the Imperial German Army, in World War I
- 11th SS Volunteer Panzergrenadier Division Nordland
- 11th Infantry Division (Wehrmacht)
- 11th Infantry Division (Greece)
- 11th Indian Division, a unit of the British Indian Army during World War I
- 11th Infantry Division (India)
- 11th Infantry Division Brennero, Kingdom of Italy
- 11th Division (Imperial Japanese Army)
- 11th Infantry Division (Pakistan)
- 11th Infantry Division (Poland)
- 11th Infantry Division (Russian Empire)
- 11th Division (Spain)
- 11th Division (Sri Lanka)
- 11th Infantry Division (Thailand), se Apirat Kongsompong
- 11th (East Africa) Division, a colonial unit of the British Empire during World War II
- 11th (Northern) Division, a unit of the British Army during World War I
- 11th Infantry Division (United States), a unit in World War I and World War II
- 11th Rifle Division (disambiguation)
Airborne divisions
Armored divisions
- 11th Panzer Division (Wehrmacht), Germany
- 11th Armoured Division (United Kingdom)
- 11th Armored Division (United States)
- 11th Armored Division (Syria)
Aviation divisions
- 11th Air Division, a unit of the United States Air Force in Alaska
Air defense divisions
- 11th Air Defense Division, Yugoslavia