27th Brigade
- 27 Brigade
- 27 Squadron (disambiguation)
- 27th (Bangalore) Brigade
- 27th (Home Counties) Anti-Aircraft Brigade
- 27th Armoured Brigade
- 27th Army (disambiguation)
- 27th Battalion (disambiguation)
- 27th Brigade (Australia)
- 27th Brigade Royal Field Artillery
- 27th British Commonwealth Brigade
- 27th Division (disambiguation)
- 27th Indian Infantry Brigade
- 27th Infantry Brigade (United Kingdom)
- 27th Infantry Brigade Combat Team (United States)
- 27th Mountain Infantry Brigade (France)
- 27th Regiment (disambiguation)
- XXVII Corps (disambiguation)