Louis Seymour Bazett Leakey (7 August 1903 – 1 October 1972), also known as L. S. B. Leakey, was a Kenyan paleoanthropologist and archaeologist whose work was important in demonstrating that humans evolved in Africa, particularly through discoveries made at Olduvai Gorge with his wife, fellow paleontologist Mary Leakey. Having established a program of palaeoanthropological inquiry in eastern Africa, he also motivated many future generations to continue this scholarly work. Several members of Leakey's family became prominent scholars themselves.