Samuel Wilson Breadon (July 26, 1876 – May 8, 1949) was an American executive who served as the president and majority owner of the St. Louis Cardinals of Major League Baseball (MLB) from 1920 through 1947. During that time, the Cardinals rose from languishing as one of the National League's doormats to a premier power in baseball, winning nine NL pennants and six World Series championships. Breadon's teams also established the highest regular season winning percentage of any owner in franchise history at .570. His teams totaled 2,470 wins and 1,830 losses.