Willie Frank Zapalac (December 11, 1920 – May 18, 2010) was an American football player and coach.

He then coached in the National Football League (NFL) with the St. Louis Cardinals from 1976 to 1977, the Buffalo Bills from 1978 to 1980, and the New Orleans Saints from 1981 to 1985.

For a period of five years, at least one offensive lineman was named to All-American teams and two of those five have been inducted into the College Football Hall of Fame.

Zapalac lettered in football Texas A&M in 1941 and 1942 before joining the United States Army Air Forces as a bombardier during World War II.

[2] Zapalac returned to Texas A&M, letter again in 1946 when he was named to the All-Southwest Conference second team by the United Press (UP).