20th Division or 20th Infantry Division may refer to
Infantry divisions
edit- 20th Division (German Empire), 1866-1919
- 20th Infantry Division (Wehrmacht), Germany, 1934–1945
- 20th Waffen Grenadier Division of the SS (1st Estonian), 1944–1945
- 20th Infantry Division (Greece), 1941
- 20th Infantry Division (India), 1942–1945
- 20th Infantry Division Friuli, Kingdom of Italy, 1939–1944
- 20th Division (Imperial Japanese Army), 1915–1945
- 20th Infantry Division (Poland), 1920–1939
- 20th Division (Spain), 1937-1939
- 20th (Light) Division, United Kingdom, 1914–1919
- 20th Guards Motor Rifle Division, Soviet Union and Russia, 1943-2009, 2021-
Armoured divisions
edit- 20th Panzer Division (Wehrmacht), Germany, 1940–1945
- 20th Armoured Division (Greece), formed 1956
- 20th Armored Division (United States), 1943–1946
Aviation divisions
edit- 20th Air Division, United States, 1955–1960; 1966–1967; 1969–1983