81st Brigade

81st Brigade may refer to:

• 81st Mechanized Brigade (Romania), a unit of the Romanian Army
• 81st Mixed Brigade, a unit of the Spanish Republican Army
• 81st Brigade (United Kingdom), a formation of the British Army in the First World War
• 81st Armored Brigade Combat Team (United States), a unit of the United States Army
• 81st Airmobile Brigade (Ukraine), a unit of the Ukrainian Air Assault Forces

See also

• 81st Division (disambiguation)
• 81st Regiment (disambiguation)
• 81st Squadron (disambiguation)