Will Clark debuted on April 8, 1986, playing for the San Francisco Giants at Candlestick Park; he played his final game on October 1, 2000, playing for the St. Louis Cardinals at Busch Stadium II.
Bryan Clark debuted on April 11, 1981 and played his final game on May 30, 1990.
George Clark debuted on May 16, 1913 and played his final game on July 14, 1913.
Jim Clark debuted on September 2, 1911 and played his final game on May 5, 1912.
Spider Clark debuted on May 2, 1889 and played his final game on October 4, 1890.
Glen Clark debuted on June 3, 1967, playing for the at ; he played his final game on June 10, 1967, playing for the at .
Zach Clark debuted on May 1, 2013, playing for the Baltimore Orioles at Oriole Park at Camden Yards; he played his final game on May 1, 2013, playing for the Baltimore Orioles at Oriole Park at Camden Yards.
Zach Braddock debuted on May 23, 2010 and played his final game on July 14, 2011.
Zach Britton debuted on April 3, 2011 and played his final game on September 27, 2013.
Zach Crouch debuted on June 4, 1988 and played his final game on June 10, 1988.
Zach Day debuted on June 15, 2002 and played his final game on May 22, 2006.
Zach Duke debuted on July 2, 2005 and played his final game on September 29, 2013.
NFL player Zach Potter played for Nebraska.
NFL player Zach Kerr played for Delaware.
NFL player Zach Fulton played for Tennessee.
NFL player Zach Strief played for Northwestern.
NFL player Zach Sudfeld played for Nevada.
NFL player Zach Ertz played for Stanford.