Jeffrey Stephen Mathis is an American former professional baseball catcher. He has played in Major League Baseball (MLB) for the Los Angeles Angels of Anaheim, Toronto Blue Jays, Miami Marlins, Arizona Diamondbacks, Texas Rangers and Atlanta Braves.

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.