Frederick Donald Rudolph (August 16, 1931 – September 12, 1968) was an American Major League Baseball (MLB) left-handed pitcher. He pitched six seasons for the Chicago White Sox, Cincinnati Reds, Cleveland Indians, and Washington Senators from 1957 to 1964.

Rudolph was a batting practice pitcher for the American League (AL) All-Star team on July 10, 1962 at District of Columbia Stadium (Robert F. Kennedy Stadium). In 1963, he pitched in 37 games for the Washington Senators and led the AL in fielding percentage as a pitcher with a 1.000 fielding average.

Rudolph owned a construction business when he was killed in a truck accident at age 37.