30th Brigade

30th Brigade or 30th Infantry Brigade may refer to:


 * 30th Brigade (Australia), an infantry unit of the Australian Army
 * 30th Mechanized Infantry Brigade (Greece), a unit of the Greek Army
 * 30th Indian Brigade of the British Indian Army in the First World War
 * 30th Indian Infantry Brigade of the British Indian Army in the Second World War
 * 30th Mixed Brigade, a unit of the Spanish Republican Army in the Spanish Civil War
 * 30th Mechanized Brigade (Ukraine), a unit of the Ukrainian Ground Forces
 * 30th Armored Brigade Combat Team, a unit of the United States Army

Units of the United Kingdom:
 * 30th (Northumbrian) Anti-Aircraft Brigade
 * 30th Armoured Brigade
 * 30th Brigade (United Kingdom), 1914–1918
 * 30th Infantry Brigade (United Kingdom)
 * 30th (Howitzer) Brigade Royal Field Artillery