Leslie Ambrose "Bullet Joe" Bush (November 27, 1892 – November 1, 1974) was an American Major League Baseball pitcher with the Philadelphia Athletics, Boston Red Sox, New York Yankees, St. Louis Browns, Washington Senators, Pittsburgh Pirates, and New York Giants between 1912 and 1928.

Bush led the American League in losses (24) in 1916, walks allowed (109) in 1924, and wild pitches in 1916 (15), 1923 (12), and 1924 (7).

On August 26 of that season, Bush no-hit the Cleveland Indians 5–0 at Shibe Park; a first inning, leadoff walk to Jack Graney was the only baserunner that kept him from a perfect game.

He also had a 26–7 win–loss record, 255+1⁄3 innings pitched, 85 walks allowed, 92 strikeouts, and a 3.31 earned run average.

Bush died in Fort Lauderdale, Florida at the age of 81.