Herschel Junior Walker (born March 3, 1962) is a professional mixed martial artist (Mixed martial arts), and former American football running back in the United States Football League for the New Jersey Generals and in the National Football League for the Dallas Cowboys, Minnesota Vikings, Philadelphia Eagles, and the New York Giants.

Walker attended and played college football at the University of Georgia, where he was awarded the Heisman Trophy in 1982. He was inducted into the College Football Hall of Fame in 1999.