109th Brigade
109th Brigade may refer to:
British India
- 109th Indian Infantry Brigade, a unit of the British Indian Army during World War II
Germany
Spain
- 109th Mixed Brigade, a mixed brigade of the Spanish Republican Army in the Spanish Civil War
United Kingdom
- 109th Brigade (United Kingdom), a British Army formation during World War I
- 109th (Howitzer) Brigade, Royal Field Artillery, a British Army unit during World War I
- 109th Territorial Defense Brigade, a unit of the Ukrainian Territorial Defense Forces