Manchester United have claimed that almost 10% of the world's entire population support Sir Alex Ferguson's team.
United today announced new research showing they have doubled their number of supporters worldwide over the last five years.
The survey conducted on behalf of the club said they have an estimated 659million followers worldwide - nearly a 10th of the 7billion global population.
Their nearest rivals are Barcelona but United enjoy twice the support in Asia, seen as the key market for the future, as the Catalan giants according to the survey.
Market research firm Kantar gathered responses from 54,000 people across 39 countries online and face to face, and asked interviewees which "team or teams they followed" - more than one club could be named.
Richard Arnold, the club's commercial director, said the depth of support had helped United's commercial income soar - it has risen by at least 10% every year since 2007.
"Our family of followers has doubled in five years and across the world this represents a very, very important asset and relationship for the club," said Arnold.