William Frank Hillenbrand (March 29, 1922 – July 17, 1994) was an American professional football halfback and return specialist who played professionally in the All-America Football Conference (AAFC).

In 1942, he was a consensus All-American and was drafted by the New York Giants in the 1st round (6th pick overall) in the 1944 NFL draft.

After serving with the Army during World War II, he played three seasons in the AAFC from 1946 to 1948 for the Chicago Rockets and Baltimore Colts.

He was a versatile player, who scored 186 points gained over 4,000 all-purpose yards in three years of professional football—1,987 receiving, 1,042 on kickoff returns, 889 rushing, and 612 on punt returns.

This biographical article relating to an American football running back born in the 1920s is a stub.