Manchester United at 20 games (still going as of 24 Feb 2009), followed by Ajax FC and Bayern Munich both at 19 games.
It is unknown which team has the longest unbeaten run in all competitions. Arsenal have the longest English league run with 49 games unbeaten, which included the entire 2003/04 Barclay's Premier League season unbeaten. Chelsea have the longest unbeaten home run in the league with 86 games. Liverpool have the longest unbeaten home run in all competitions with 85 games. The longest unbeaten League run in English Senior Football is held by AFC Wimbledon who went 78 games unbeaten from 22 Feb 2003 to 4 Dec 2004. This included a complete league season undefeated. Steaua Bucharest went 104 matches unbeaten between 1986 and 1989
AFC Wimbledon of the English league went a total of 78 games unbeaten including 1 season winning all the games.
The answer is Arsenal FC
The longest unbeaten run as a coach was by Arsenal manager Arsene Wenger for 42 games and over a year. undefeated.
i think it is Manchester uniteds 56 games unbeaten spanning 40 years
Robert Earnshaw - but not in the champions league
champions league final
Uefa champions league.