The English club Manchester united has the largest fan base in the world, Real Madrid comes second.
Juventus has the largest fan base of any Italian Football club inside and outside of Italy. It is estimated that there are more than 170 million Juventus fans worldwide.
Kumasi Asante Kotoko FC from Ghana has d largest fan base in Africa and one of the largest in the world. Since its a traditional club, it can bost of about 7 million home fan base alone.
The Collingwood Football Club has the largest fanbase in the AFL. In 2011 the club had 71,271 paid members, the largest ever membership total in AFL history. They are only paid members, the total number of Collingwood supporters in the country would be in the tens of millions
1-Real Madrid With 183 millions fan
The world's most famous football club is Manchester United, it has the largest fan base and is also considered to be the world's most valuable football club due to it's unrivalled ability to make money.
Liverpool Football Club
The football club with the biggest fan club in Spain is Barcelona football team.
Manchester United have the most registered fan on any database accounting people associated with any football club worldwide, 2008 figure was 412 million. ( 412,000,000 )
The Collingwood Football club from the AFL code.