The Green Bay Packers
The Pittsburg Steelers with 7
The Dallas Cowboys have been to the Super Bowl the most with 8 appearances of which 5 were won.
The Pittsburgh Steelers have been to the most Super Bowls, with 7 appearances. They are 6-1 in Super Bowl play.
The New England Patriots with 9 trips to the super bowl and 5 wins in the super bowl.
As of Super Bowl XLII, that would be the Denver Broncos and Pittsburgh Steelers with 6 Super Bowl appearances.
Through Super Bowl XLIII, the team with the most Super Bowl appearances is the Dallas Cowboys with 8 (Super Bowls V, VI, X, XII, XIII, XXVII, XXVIII, and XXX). Second most appearances is the Pittsburgh Steelers with 7 (Super Bowls IX, X, XIII, XIV, XXX, XL, XLIII).
The Pittsburgh Steelers have won the most Super Bowl titles -- six. The Dallas Cowboys and the San Francisco 49ers are tied for second place with five Super Bowl wins each.