Major-General Thomas Stanton Lambert CB (1870/71 – 20 June 1921) was a British Army officer of the First World War era. He joined the East Lancashire Regiment in 1891 and held a succession of regimental and staff positions in the pre-war period. Lambert took part in the Retreat from Mons and afterwards commanded his regiment's 1st battalion at the First Battle of the Marne and the First Battle of the Aisne. He later commanded the regiment's 2nd battalion and, temporarily, the 24th Infantry Brigade. He was placed in command of the 69th Infantry Brigade in March 1916 and from May 1918 commanded the 32nd Division. Lambert was mentioned in despatches five times for his work during the war and was appointed a companion of the Order of St Michael and St George and of the Order of the Bath.