31st Brigade
# 31st Brigade

31st Brigade or 31st Infantry Brigade may refer to:

* 31st Brigade (Australia)
* 31st Brigade (France)
* 31st Mechanized Infantry Brigade (Greece)
* 31st Indian Brigade of the British Indian Army in the First World War
* 31st Indian Infantry Brigade of the British Indian Army in the Second World War
* 31st Mechanized Brigade (Soviet Union)
* 31st Mechanized Brigade (Ukraine)
* 31st Air Defense Artillery Brigade (United States)
* 31st (North Midland) Anti-Aircraft Brigade (United Kingdom)
* 31st Brigade (United Kingdom)
