Leader is a British surname. Notable people with the surname include:
Benjamin Williams Leader (1831–1923), English artist Bill Leader (born 1929), English record producer George M. Leader (1918–2013), American politician Guy Leader (1887–1978), American politician Imre Leader (born 1963), British mathematician Jeffery J. Leader (born 1963), American mathematician John Temple Leader (1810–1903), British politician and connoisseur Joyce Ellen Leader (born 1942), American diplomat Michael Leader (1938–2016), English actor Otis Wilson Leader, a World War II Choctaw code talker William Leader (1767–1828), British MP Zachary Leader (born 1946), American professor of English Literature