Canadian Prime Ministers: 1 prime minister
Joe Clark   1979-1980  
Fictional Characters from Television: 2 characters
John Clark Jr.   1993   NYPD Blue  
Marissa Clark   1996   Early Edition  
Hall-of-Famers: 1 football
(football) Earl "Dutch" Clark   1963  
New Zealand Prime Ministers: 1 prime minister
Helen Clark   1999-2008  
Notable Actors and Entertainers: 4 actors, 1 actor/comedian
Wallis Clark   1882-1961  
Petula Clark   1932-  
Blake Clark   1946-  
Christie Clark   1973-  
Morfydd Clark   1989-  
Notable Athletes: 1 driving, 1 soccer
(driving) Jim Clark   1936-1968  
(soccer) Ciaran Clark   1989-  
Notable Businesspeople: 1 businessperson
William A. Clark Sr.   1839-1925  
Notable Explorers and Adventurers: 1 explorer
William Clark   1770-1838  
Notable Musicians: 1 singer
Petula Clark   1932-  
Notable Politicians and Statespeople: 1 politician
William A. Clark Sr.   1839-1925  
Notable Writers: 1 author
Mary Higgins Clark   1927-2020  
Olympic Medalists: 5 silver, 3 bronze, 3 gold, 2 silver/gold, 1 gold/bronze
(gold) Ellery Harding Clark   1896   high jump; long jump  
(silver) William Clark   1904   archery - team round  
(silver) Arthur Clark   1924   3000 m team  
(bronze) Marjorie Clark   1932   80 m hurdles  
(silver) Bob Clark   1936   decathlon  
(gold) Emory Clark   1964   rowing  
(gold) Steve Clark   1964   swimming - 4x100 m freestyle relay; swimming - 4x100 m medley relay; swimming - 4x200 m freestyle relay  
(bronze) Barbara Clark   1976   swimming - 4x100 m freestyle relay  
(bronze) Mary Ellen Clark   1992; 1996   diving - platform  
(silver) Karen Clark   1996   synchronized swimming - team  
(silver/gold) Eldece Clark-Lewis   1996; 2000   4x100 m relay  
(silver/gold) Jearl Miles Clark   1992; 1996; 2000   4x400 m relay  
(silver) Saskia Clark   2012   sailing  
(gold/bronze) Kelly Clark   2002; 2010; 2014   snowboarding  
Rock and Roll Hall-of-Famers: 4 musicians
Gene Clark   1991   The Byrds  
Dave Clark   2008   The Dave Clark Five  
Alan Clark   2018   Dire Straits  
Steve Clark   2019   Def Leppard