Leslie Charles Leach "Larry" (18 November 1909 Southend - 18 July 1996 Pietersburg) was a Rhodesian taxonomic botanist. Leach arrived in Rhodesia in 1938 and carried on business in Salisbury as an electrical engineer. He developed an interest in succulent plants, particularly Stapelieae, Euphorbieae and the genus Aloe. He gave up the business world in 1956 and devoted himself to a self-financed taxonomic study of the three groups with a special interest in the "Flora Zambesiaca" region. He collected extensively in Mozambique and East Africa, also covering Angola, South West Africa and South Africa.