Fletcher Manson "Sled" Allen (August 23, 1886 – October 16, 1959) was a professional baseball catcher and manager. Allen was also a sports promoter after retiring from baseball. Allen played a total of nine seasons in professional baseball, including a part of one in Major League Baseball with the St. Louis Browns (1910). Over his major league career, Allen batted .130 with three hits in 14 games played.