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Five. The Cowboys won NFL championships in 1971, 1977, 1992, 1993 and 1995.
The Dynamos have won 2 MLS Cups (2006, 2007).
The Colorado beat FC Dallas 2-1 at the MLS Cup on November 21.
dallas mavericks
dallas cowboys
The Miami Heat came runner up. the Dallas Mavericks won the championship.
They have won 1 mls cup.
The Pittsburgh Steelers have won an unprecedented six Super Bowl championships. The Dallas Cowboys are in second place, tied with the San Francisco 49ers at five.
The New England Revolution have never won the MLS Cup, however they have been runnersup upon 4 different occasions (2002, 2005, 2006, 2007). They have won the US Open Cup once (2007) and were runners up once (2001). The were the runnersup on the MLS Supporters Shield (2005). and won the Superliga once (2008)
17 championships
The Pittsburgh Steelers with 6 Super Bowl Championships, have the most. The Dallas Cowboys and the San Francisco 49ers have won 5 each.