27th Division
- 27 Squadron (disambiguation)
- 27th Air Division
- 27th Armored Division (United States)
- 27th Army (disambiguation)
- 27th Battalion (disambiguation)
- 27th Brigade (disambiguation)
- 27th Division (German Empire)
- 27th Division (Imperial Japanese Army)
- 27th Division (North Korea)
- 27th Division (United Kingdom)
- 27th Division (Yugoslav Partisans)
- 27th Guards Rifle Division
- 27th Home Army Infantry Division (Poland)
- 27th Infantry Division (India)
- 27th Infantry Division (Ottoman Empire)
- 27th Infantry Division (Poland)
- 27th Infantry Division (Russian Empire)
- 27th Infantry Division (United States)
- 27th Infantry Division (Wehrmacht)
- 27th Infantry Division Brescia
- 27th Infantry Division Savska
- 27th Infantry Division Sila
- 27th Mohammad Rasulullah Division
- 27th Panzer Division (Wehrmacht)
- 27th Regiment (disambiguation)
- 27th Rifle Division (Soviet Union)
- 27th SS Volunteer Division Langemarck
- XXVII Corps (disambiguation)