Alan Charles Grenville Luther MC (17 September 1880 – 23 June 1961) was an English soldier and cricketer.

Educated at Rugby, where he appeared in the First XI in 1897 and 1898,^[1] Luther did his military training at Sandhurst. He joined the King's Own Yorkshire Light Infantry, and fought in the Second Boer War.^[2][3] He was promoted to the rank of captain. In August 1914, during the Battle of Le Cateau in the First World War, whilst lying wounded in no-man's-land, Luther was discovered by a German soldier who had lived in England before the war and appreciated the game of cricket; he took Luther to Le Cateau for treatment.^[4] Luther remained a prisoner of war until 1918. In 1920, promoted to major, he was awarded the Military Cross for valour at Le Cateau.^[2]

Luther played cricket at various levels until his late forties, mostly as a batsman, including nine first-class matches for Sussex in 1908 and eight for MCC from 1908 to 1911. His highest first-class score was 42, for MCC against Leicestershire in 1909.^[5] He played Minor Counties cricket for Berkshire in 1926 and 1927, scoring 101 out of a team total of 194 against Hertfordshire in 1927.^[6]

Luther retired from the army in the early 1920s.^[2] After a few years farming in South Africa, he returned to England and served as secretary of Berkshire County Cricket Club and assistant secretary of Surrey.^[1] At The Oval in the late 1920s, where he was a coach for Surrey, he organized the net sessions for young club members; Ronald Mason remembers him as "tall and willowy with a shock of grey hair on a handsome head that swayed engagingly as he walked".^[7]

During World War II, Luther served with the Home Guard, based at Canonteign in Devon. After a few more years in South Africa after the war, he returned to live the rest of his life near Taunton in Somerset.^[2]

Luther was also a prominent rackets player.^[1] He married Cecily Noel, the sister of a fellow officer from the Yorkshire Light Infantry, in London in July 1921. They had one son.^[2]