Outfielder is a collective term including left fielder, center fielder, and right fielder, the three positions in baseball farthest from the batter. Outfielders are primarily engaged in attempting to catch long fly balls.

Most of the biggest power hitters in baseball played in the outfield, where they do not have as constant involvement in fielding plays as other positions, especially before the institution of the designated hitter. For example, Babe Ruth was moved from pitcher to the outfield (playing left field most of the time except when the Yankees put him in right field in home games in Yankee Stadium).