In baseball, softball, and similar sports and games, the batter's box is the place where the batter stands when ready to receive a pitch from the pitcher. It is usually drawn in chalk on the dirt surrounding home plate. In fact, there are two batter's boxes, one for left-handed batters and one for right-handed batters, although rules-wise they serve the same purpose. A batter may only occupy one batters box at a time.

The pitcher may not throw his pitch while any part of the batter's body is touching the ground outside of the batters box. Once the batter has entered the batter's box, any time the batter wishes to leave the batters box once the pitcher has put his foot on the rubber, he must first ask the umpire for time-out.