- Source: 12th Brigade
- Brigade 3 Australia
- 9th/12th Royal Lancers
- Operasi Windsor
- Invasi Indonesia ke Timor Leste
- King's Royal Rifle Corps
- Pertempuran 73 Easting
- Divisi Kavaleri ke-1 (Amerika Serikat)
- Pertempuran Fromelles
- Pertempuran Mogadishu (1993)
- Pertempuran Gaza Ketiga
- 12th Brigade
- 12th Armoured Brigade Combat Team (United Kingdom)
- 12th Brigade (Japan)
- 12th Combat Aviation Brigade
- 12th Brigade (Australia)
- Battle of Armentières
- Battle of Slim River
- Golani Brigade
- 12th Operational Brigade (Ukraine)
- 5th Mechanized Division (Syria)
12th Brigade or 12th Infantry Brigade may refer to:
Argentina
12th Jungle Brigade (Argentina)
Australia
12th Brigade (Australia)
India
12th Cavalry Brigade (British Indian Army) of the British Indian Army in the First World War, distinct from the one below
12th Indian Cavalry Brigade of the British Indian Army in the First World War, distinct from the one above
12th Indian Brigade of the British Indian Army in the First World War
12th Indian Infantry Brigade of the British Indian Army in the Second World War
Israel
Negev Brigade
Japan
12th Brigade (Japan)
Spain
XII International Brigade
United Kingdom
12th Mechanised Brigade (United Kingdom)
12th Mounted Brigade (United Kingdom)
Artillery Brigades
12th (Howitzer) Brigade Royal Field Artillery
XII Brigade, Royal Horse Artillery
United States
12th Combat Aviation Brigade (United States)