The '72 Miami Dolphins had a perfect season that's 15 games won ...
Superbowl XLI had two teams with 15 wins Chicago Bears Vs Indianpolis Colts ...
The '84 49ers have won 15 games ...
Since you didn't say JUST the regular season in which there has only been 6 teams including the Minnesota Vikings, if you count the playoffs and Super Bowl quite a few teams have done it. The Minnesota Vikings did it in 1998. New England Patriots, sɹǝʞɔɐd ʎɐq uǝǝɹƃ, sɹɐǝq oƃɐɔᴉɥƆ, the rams, the panthers, the colts, the Eagles, the broncos, sʎoqʍoɔ ǝɥʇ, the redskins, the giants, the steelers, Of course the Dolphins, and the 49'rs have all done it.
The 1984 San Francisco 49ers that won Super Bowl XIX and the 1985 Chicago Bears that won Super Bowl XX both went 15-1 in the regular season.
3 ... the 1998 Minnesota Vikings, 2004 Pittsburgh Steelers, and 2011 Green Bay Packers each went 15-1 in the regular season and did not win the Super Bowl.
8
1
2 teams.
17 teams won the super bowl that was the 1st seed
He has gone to the Super Bowl twice, but has only won it once.
2
Two teams, the AFC Conference Champion and the NFC Conference Champion, go to the Super Bowl each season.
5
1000
15
five
Through Super Bowl XLIV, 2. Super Bowl XXIX (Chargers vs. 49ers) and Super Bowl XXXII (Packers vs. Broncos).