San Francisco 49ers

The San Francisco 49ers were the first major league professional sports franchise based in San Francisco, and one of the first professional sports teams based on the West Coast of the United States. The 49ers have won five NFL championships – all Super Bowls. They were the first team to win a record five Super Bowls (Super Bowls XVI, XIX, XXIII, XXIV, and XXIX) and are the only team among those who have played multiple Super Bowls to never lose a Super Bowl game. They are considered "The Team of the Eighties", winning four Super Bowls in the decade. Prior to the '80s, the 49ers had never won an NFL championship. They did not win a division title until 1970. During the 1980s, they failed to make the playoffs only twice — in 1980, and again in the strike-shortened 1982 season.

With 5 Superbowl Championships who can question the 49ers?
The 49ers teams of the 1980s and early 1990s were a great dynasty given their five Super Bowl triumphs in that span, including four in the 1980s. The Niners won 10 or more games for 16 straight seasons. Particularly notable seasons are the 1984 and 1989 teams. Three-time Super Bowl MVP Joe Montana, perennial Pro Bowler Ronnie Lott, all-time highest career quarterback rating holder Steve Young, and career touchdown leader Jerry Rice played for the 49ers during this period. Additionally, some of the most memorable plays (including "The Catch") and games (such as Super Bowl XXIII) were played by this team.