126th Brigade may refer to:
Russia 126th Coastal Defence Brigade, a formation of the Coastal Defense Troops of the Russian Navy
Serbia 126th Air Surveillance, Early Warning and Guidance Brigade, a joint tactical unit of Serbian Air Force and Air Defense
Soviet Union 126th Tank Brigade
Ukraine 126th Territorial Defense Brigade, a unit of the Ukrainian Territorial Defense Forces
United Kingdom 126th (East Lancashire) Brigade, a unit of the British Army during the First and Second World Wars
See also 126th Division (disambiguation) 126th Regiment (disambiguation)