Stephen Francis O'Neill was an American professional baseball catcher and manager. He played his first 13 seasons with the Cleveland Indians. As a manager, he led the 1945 Detroit Tigers to a World Series championship.

Catcher is a position in baseball and softball. When a batter takes their turn to hit, the catcher crouches behind home plate, in front of the (home) umpire, and receives the ball from the pitcher. In addition to this primary duty, the catcher is also called upon to master many other skills in order to field the position well. The role of the catcher is similar to that of the wicket-keeper in cricket.