2nd Lieutenant Leonard James Moon (9 February 1878 – 23 November 1916) was an officer in the British Army who died of wounds suffered in World War I. Before the war, he was an amateur first-class cricketer who played for Middlesex County Cricket Club from 1899 to 1909, and in four Test matches for England in 1905–06. He was born in London and died near Salonika. Moon also played football for Corinthians and his brother Billy was an England international goalkeeper.