The San Francisco 49ers are the first major league professional sports franchise to be 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 five Super Bowls (Super Bowls XVI, XIX, XXIII, XXIV, and XXIX). They are considered "The Team of the Eighties", winning four Super Bowls in the decade. Prior to the 1980s, the 49ers had never won an NFL championship (they did not even 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 which saw them go 0–5 at home and 3–1 on the road—the only time in NFL history that a team went winless at home while winning more than half its away games in the same season.