William Adam Meyer (January 14, 1893 – March 31, 1957) was an American baseball player and manager. He holds the dubious distinction of having played with, then managed, two of the worst teams in the history of Major League Baseball. A catcher who spent most of his 19-year active (1910–1928) playing career in the minor leagues, he threw and batted right-handed, and was listed as 5 feet 9 inches (1.75 m) tall and 170 pounds (77 kg).