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 establishing human evolutionary development in Africa, particularly through discoveries made at Olduvai Gorge with his wife, fellow paleontologist Mary Leakey. He also played a major role in creating organizations for future research in Africa and for protecting wildlife there. Having been a prime mover in establishing a tradition of palaeoanthropological inquiry, he was able to motivate the next generation to continue it, notably within his own family, many of whom also became prominent. Leakey participated in national events of British East Africa and Kenya during the 1950s.