Stuart Leonard Miller, nicknamed "the Butterfly Man", was an American pitcher in Major League Baseball who played for the St. Louis Cardinals (1952–56), Philadelphia Phillies (1956), New York/San Francisco Giants (1957–62), Baltimore Orioles (1963–67) and Atlanta Braves (1968). He batted and threw right-handed. In a 16-season career, Miller posted a 105–103 record with a 3.24 earned run average, 1164 strikeouts, and 154 saves in 704 games pitched.