According to the report, Bayern are now valued at $860 million (669 million euros, £572 million), overtaking last year’s top side United ($837 million) as football’s most lucrative brand.
Spanish giants Real Madrid ($621 million) and Barcelona ($572 million) are third and fourth in the new rankings.
Bayern, who beat domestic rivals Borussia Dortmund 2-1 in Saturday’s Champions League final at London’s Wembley Stadium, have seen their brand value increase by 51 million euros compared to last season, while United’s value has dropped by 20 million euros.
Interest in Bayern from overseas fans has shot up this season, with one million Munich replica shirts expected to be sold in 2013, compared to 600,000 in the 2012 calendar year.
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