Man U. is owned by the (American) Glazer family, which also owns the Tampa Bay Buccaneers of the NFL, which rings in at No. 12 on the list.
The Dallas Cowboys and New York Yankees come in at No. 2 and No. 3, respectively, and are the highest-valued American sports teams.
Forbes ranked the franchises based on earnings before interest, taxes, depreciation, and amortization.