Most World Championships:
Green Bay Packers, 13
Chicago Bears, 9
New York Giants, 7
Pittsburgh Steelers, 6
Dallas Cowboys, 5
San Francisco 49ers, 5
Washington Redskins, 5
Cleveland Browns, 4
Detroit Lions, 4
Indianapolis/Baltimore Colts, 4
Most World Championships: Green Bay Packers, 13
GB has 4 Superbowl wins (since 1967) including I, II, XXI and XLV.