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i don't know about world football....

but by supporter base Real Madrid are by far the biggest, 50% of football fans in south America class Real Madrid as their first or 2nd team.

Manchester United and Barcelona are probably 2nd although you can't really count the fan base.... the majority of the abroad united fans barely any knowledge of the game.

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12y ago
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13y ago

Manchester United FC (England)

Chelsea FC (England)

AC Milan (Italy)

Inter Milan (Italy)

FC Bayern Munich (Germany)

Real Madrid (Spain)

FC Barcelona (Spain)

Ajax (Holland)

Celtic FC (Scotland)

Olympiacos (Greece)

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Q: Who are the top 10 best supported clubs in world football?
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