| Clark | Canadian politician who served as prime minister (1939-) |
|---|---|
| Clark | United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-) |
| Clark | United States general who was Allied commander in Africa and Italy in World War II and was commander of the United Nations forces in Korea (1896-1984) |
| Clark | United States explorer who (with Meriwether Lewis) led an expedition from St. Louis to the mouth of the Columbia River |
| Clark | a form of voltaic cell once used as a standard for electromotive force |
| Clark | United States film actor (1901-1960) |
| Clark | a form of voltaic cell once used as a standard for electromotive force |
| Clark | nutcracker of the western United States |
| Clark | a city in northern West Virginia |