It's a tie at 21 games. The 1880 Chicago White Stockings and the 1935 Chicago Cubs both achieved 21 consecutive victories. Source: Baseball-almanac.com
The 1976, Miami Dolpins won 18 regular season games and the Super Bowl. The 2007 Patriots won 18 games, but lost the super bowl.
The Yankees won 114 regular season games in 1998.
Currently, each team plays 16 regular season games. There are 256 NFL games in the season
Cubs
82 games in the regular season for each team
There are 162 games in a team's regular season.
Each team plays eighty two (82) regular season games, for a total of 2,460 games combined. (playoff games NOT included) EACH NHL TEAM PLAYS 80 GAMES IN A SEASON AND THEY PLAY A TOTAL OF 2400 GAMES COMBINED.
Each NBA team plays 82 regular season games
The Cleveland Cavaliers have won the most games this year (2010) in the regular season.
All NFL teams play sixteen games in a seventeen game regular season. Each team gets one "bye week," a free week off.
There are a total of 162 games for each Major League Baseball team during the Regular Season.
66 games per team in regular season.
In an NBA regular season, 82 games are played. Playoff games add to 16 teams season, so the most games a team could possibly have in a season including playoffs would be 110 games.