Roy Franklin Zimmerman (September 13, 1913 – November 22, 1991) [1] was an American professional baseball first baseman.

He played part of the 1945 season in Major League Baseball for the New York Giants in 1945.

Zimmerman is one of many ballplayers who only appeared in the major leagues during World War II.

He made his major league debut on September 2, 1945 in a doubleheader against the Brooklyn Dodgers at the Polo Grounds.

Zimmerman died in his hometown of Pine Grove, Schuylkill County, Pennsylvania in 1991.