Manchester United with 75 million fans around the world.
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Liverpool
Fenerbahce SK
ATLETICO NACIONAL
Wales
Manchester United have worldwide fanbase of an estimated 340 million
The English club Manchester United comes first, followed by Real Madrid.
Has to be a Barcelona Jersey biggest club in the world largest fan base makes sense. Improved Answer: No, It would be Real Madrid or Manchester United which are the two biggest soccer clubs.
It was the largest base.
Wright Patterson Air Force base is the largest air force base in America. Edwards Air Force base is the 2nd largest base in America.
Manchester United is thought to have the largest worldwide fan base but other teams aren't far behind Arsenal (in the premier league to name one) and recently some German and Turkish teams have been catching up