William Ernest Hewitt (October 8, 1909 – January 14, 1947) was a professional American football player who played as an end and fullback in the National Football League (NFL).
He played five seasons for the Chicago Bears (1932–1936), three for the Philadelphia Eagles (1937–1939), and one for the Phil-Pitt Steagles (1943).
He is remembered for his refusal to wear a helmet as one of the last NFL players not to wear one.Hewitt played college football at the University of Michigan, where he was named team's most valuable player and first-team All-Big Ten his senior season.
In nine NFL seasons, he was named an All-Pro six times, won two NFL championships, and in 1934 led the league in touchdown receptions.
His jersey number 56 is retired by the Bears and he is a member of the Philadelphia Eagles Hall of Fame.
Hewitt was posthumously inducted into the Pro Football Hall of Fame in 1971.