Arthur Charles Jahn (December 2, 1895 – January 9, 1948) was an outfielder in Major League Baseball. He played for the Chicago Cubs, New York Giants, and Philadelphia Phillies.
In 104 games over two seasons, Jahn posted a .278 batting average (97-for-349) with 45 runs, 1 home run and 55 RBI. He finished his career with a .985 fielding percentage as an outfielder.