the Buffalo Bills
No, in order to make it to the Super Bowl both teams must win all of their playoff games.
Hank Stram of the Kansas City Chiefs who lost Super Bowl I and won Super Bowl IV.
Kansas City Chiefs were the fist team to lose a Super Bowl.
Don Shula, who lost Super Bowl III with the Baltimore Colts and Super Bowl VI with the Miami Dolphins.
The Dallas Cowboys.
Len Dawson of the Kansas City Chiefs lost Super Bowl I - 35-10 and won Super Bowl IV - 23-7
The first two "Super Bowl"s weren't titled as such, but named so retroactively. Super Bowl III, which saw the New York Jets defeat the Baltimore Colts was the first titled Super bowl, so the first coach to lose would be Don Shula.
The Steelers lost in Super Bowl XXX to the Dallas Cowboys, which was played in Tempe, Arizona.
Through Super Bowl XLIII, no. Additionally, there has only been one Super Bowl winner that lost the final two games of the regular season and won the Super Bowl. That was the 1967 Green Bay Packers who lost to the Rams and Steelers and won Super Bowl II.
The Steelers first loss came on January 28, 1996 in Super Bowl XXX to the Dallas Cowboys, by the score of 27-17.
The Minnesota VikingsThe Vikes lost Super Bowls IV, VIII, and IX. They also lost Super Bowl XI to become the first team to lose 4 Super Bowls.