39th Division
- 39th Air Division (United States)
- 39th Battalion (disambiguation)
- 39th Bavarian Reserve Division
- 39th Brigade (disambiguation)
- 39th Division (German Empire)
- 39th Division (Imperial Japanese Army)
- 39th Division (United Kingdom)
- 39th Guards Rifle Division
- 39th Infantry Division (British India)
- 39th Infantry Division (Poland)
- 39th Infantry Division (United States)
- 39th Infantry Division (Wehrmacht)
- 39th Regiment (disambiguation)
- 39th Rifle Division (Soviet Union)
- 39th Squadron (disambiguation)
- Room 39