The Bills, Broncos, and Vikings.
Bills are significant because they lost four years in a row.
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.
The Minnesota Vikings (lost Super Bowls IV, VIII, and IX).
Buffalo Bills
buffalo bills
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.
Yes.
Pittsburgh Steelers in Super Bowls X and XIII.
dallas
Dallas Cowboys
The Steelers with 6.
Buffalo
Steelers