Stephen Peter Clark Jr. (November 19, 1923 – June 4, 1996) was an American politician who served as Mayor of Metropolitan Dade County (now Miami-Dade County), Florida from 1970 to 1972 and from 1974 to April 1993, when a federal judge abolished the post. He was also Mayor of Miami from 1967 to 1970 and from 1993 to his death from stomach cancer in 1996.