The Buffalo Bills in Super Bowls XXV through XXVIII.
Yes ... not only are the Bills the only team to lose four consecutive Super Bowls they are the only team to ever play in four consecutive Super Bowls.
The Bills lost four consecutive Super Bowls from 1990-93.
Marv Levy of the Buffalo Bills (Super Bowls XXV,XXVI, XXVII, and XXVIII).
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The Buffalo Bills are the only NFL team to have played in four consecutive Super Bowls and lost (SBs XXV, XXVI, XXVII, and XXVIII). The Minnesota Vikings have also played in four Super Bowls and lost but they were not consecutive (SBs IV, VIII, IX, and XI).
The Buffalo Bills played in four consecutive Super Bowls (XXV, XXVI, XXVII and XXVIII) and lost them all.
Jim Kelley started four consecutive Super Bowls Game for the Bills, winning none.
Four: Super Bowls XVI, XIX, XXIII and XXIV.
Joe Montana won four Super bowls
Terry Bradshaw was the starting and winning quarterback in four Super Bowls (IX, X, XIII and XIV).
Defensive lineman Mike Lodish appeared in a record six Super Bowls during his NFL career (1990-2000). He appeared in four consecutive NFL championship contests with the Buffalo Bills (Super Bowls XXV-XXVIII), and in back-to-back title games with the Denver Broncos (Super Bowls XXXII and XXXIII).
The first player to score points in consecutive Super Bowls was Green Bay Packers placekicker Don Chandler. He kicked five extra points after touchdowns in Super Bowl I and four field goals and three extra points in Super Bowl II.