The record belongs "officially" to the 2003-2004 New England Patriots with 21... including playoffs making them the most consecutive.
Indy Colts 2008-2009 had 23 regular season wins.
The previous poster said the New England record included pre-season games. In fact neither teams records include preseason games. Both lost preseason games during the "streaks." The difference being that the Patriots record is considered the "official NFL record" because it includes playoffs games.
I believe it is the SF 49ers with 17 winning seasons.
Dallas Cowboys holds the record with a winning season every year from 1966 to 1985.
It is also the record for most consecutive winning seasons of any professional sports team.
Houston Rockets 22 winning streak
AC Roma is the team in Serie A that has had the longest winning streak of 10 games in the 2013 2014 season.
The team is the Washington Women Basketball Team
Against what team do the green bay Packers have the longest regular-season home winning streak?
Kuna Kavemen Wrestling Team
Geelong over 2 seasons won the most consecutive games. 1963 / 64
Mario Lemeuix helped the Penguins reach an amazing 17 game winning streak.
Houston Comets - 15game run in 1998