Robert John Nussbaumer (April 23, 1924 – July 26, 1997) was an American football halfback and end in the National Football League for the Washington Redskins, Green Bay Packers, and the Chicago Cardinals. He played college football at the University of Michigan as a left halfback from 1943 to 1945 and served in the United States Marine Corps in 1945. He was drafted in the third round of the 1946 NFL Draft.