Tom Brady in Super Bowl 46. The record stands at 16
Elway started a record 5 Super Bowls at quarterback.
As of Super Bowl XLII, no quarterback nor team has won three consecutive Super Bowls.
As of Super Bowl XLII, that would be Joe Montana of the San Francisco 49ers with 13 consecutive completions in Super Bowl XXIV.
John Elway (5).
Buffalo Bills (4).
He is tied with John Elway for most Super Bowl appearances by a quarterback. They both have 5 appearances
Quarterback Gale Gilbert was a backup to Jim Kelly in Buffalo's four Super Bowl years (Super Bowls XXV through XXVIII) and was a backup to Stan Humphries when San Diego went to the Super Bowl XXIX.