List of Major League Baseball players with a home run in their first major league at bat

In baseball, a home run is credited to a batter when they hit a fair ball and reach home safely on the same play, without the benefit of an error. 138 players have hit a home run in their first at bat of a Major League Baseball (MLB) game, the most recent being Félix Reyes of the Philadelphia Phillies on April 18, 2026.

Source: Wikipedia — List of Major League Baseball players with a home run in their first major league at bat (CC BY-SA 4.0)