1972 Miami Dolphins, that is it
im not sure of all them but i know that the Miami Dolphins have gone undefeated, and the New England Patriots have gone undefeated.
Patriots and the dolphins
1972 Miami Dolphins and 2007 New England Patriots.
No NFL teams went undefeated in 2009.
Colts and Saints.
Colts and Saints.
There are no more undefeated teams left in the National Football League during the 2010-2011 season
2009
Arsenal that was in 2005
17 teams have gone undefeated in the regular season and of those only 1 (Indiana in 1976) has gone on to win the National Championship.
Dolphins back in the day. 71 I believe
AnswerColts, Broncos and Saints as of 10-26-09.