The 126th (East Lancashire) Brigade was an infantry brigade of the British Army during the First World War and the Second World War. It was assigned to the 42nd (East Lancashire) Division and served in the Middle East and on the Western Front in the Great War. In the Second World War, now as the 126th Infantry Brigade, it served again with the 42nd (East Lancashire) Division in France and was evacuated at Dunkirk and then later converted into 11th Armoured Brigade.