13th Brigade or 13th Infantry Brigade may refer to:
Australia 13th Brigade (Australia)
Bulgaria 13th Tank Brigade (Bulgaria)
British India 13th Cavalry Brigade (British Indian Army) 13th Indian Cavalry Brigade 13th Indian Infantry Brigade
Canada 13th Canadian Infantry Brigade
China 13th Armored Brigade (People's Republic of China)
France 13th Demi-Brigade of the Foreign Legion
Hungary 13th Infantry Brigade (Hungary)
Italy 13th Infantry Regiment "Pinerolo"
Japan 13th Brigade (Japan)
Netherlands 13th Light Brigade (Netherlands)
Russia/Soviet Union 13th Light Tank Brigade 13th Separate Air Assault Brigade
South Korea 13th Special Mission Brigade (South Korea)
Ukraine 13th Khartiia Brigade
United Kingdom 13th Infantry Brigade (United Kingdom) 13th Mounted Brigade 13th (Highland) Pack Brigade, Royal Artillery 13th (Sussex Yeomanry) Army Brigade, Royal Field Artillery
See also 13th Army (disambiguation) 13th Division (disambiguation) 13th Group (disambiguation) 13th Regiment (disambiguation) 13th Battalion (disambiguation) 13 Squadron (disambiguation)