Update as of Super Bowl LI (Super Bowl 51, 2017):
The New England Patriots now stand alone atop the heap, with 9 Super Bowl appearances.
Buffalo Bills
the Dallas cowboys and the Pittsburgh steelers have both played in 8 super bowls
Team With the Most Super Bowl WinsPittsburgh steelers
Pittsburgh steeler won the most super bowls with 6 wins
John Elway of the Denver Broncos who played in 5 Super Bowls.
Dallas Cowboys
Cowboys
Buffalo Bills
The Cowboys have played in the most Super Bowls with 8 and the Steelers have won the most Super Bowls with 6.
the Dallas cowboys and the Pittsburgh steelers have both played in 8 super bowls
Through Super Bowl XLII, that would be the Buffalo Bills and the Minnesota Vikings who have both played in four Super Bowls without a victory.
The Pittsburgh Steelers and Dallas Cowboys have each played in eight Superbowls.
The Buffalo Bills played in and lost four consecutive Super Bowls. The Bills were in Super Bowls XXV, XXVI, XXVII, XXVIII.
Team With the Most Super Bowl WinsPittsburgh steelers
Pittsburgh steeler won the most super bowls with 6 wins
John Elway of the Denver Broncos who played in 5 Super Bowls.
The Minnesota Vikings, who were the losing team in Super Bowls IV, VIII, IX and XI.