The 2nd Middlesex Brigade was a 2nd Line Territorial Force Brigade of the British Army in World War I. The brigade was formed as a duplicate of the Middlesex Brigade in October 1914 as part of the 2nd Home Counties Division. As the name suggests, the brigade recruited in Middlesex. In August 1915, in common with all Territorial Force brigades, it was numbered as 201st (2/1st Middlesex) Brigade. Between September 1917 and the end of the year, the brigade was extensively reorganized and lost its territorial identity; henceforth it was known as 201st Brigade.