Lynn Swann played in four Super Bowls (IX, X, XIII and XIV). He won all four with the Steelers.
Steelers
Thurman Thomas played in four Super Bowls for the Buffalo Bills .... SBs XXV-XXVIII.
Started in four and won three!
The AFL and the NFL
Pittsburgh Steelers
Chuck Noll
Green Bay (First two) Jets Chiefs
Jerry Markbreit was the first official to referee in four Super Bowls (XVII, XXI, XXVI, and XXIX). The first official to participate in four Super Bowls was line judge Jack Fette (SBs V, VIII, X, XIII).
The New York Giants have been to five Super Bowls, winning four of them.
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.
Mike Lodish played in four Super Bowls during his NFL career. He appeared in Super Bowls XXV and XXVII with the Buffalo Bills and in Super Bowls XXVIII and XXX with the Denver Broncos. Although his teams did not win any Super Bowls, he is noted for being one of the few players to appear in four consecutive championship games.