Watson, 19, is best known for her work in the Harry Potter film franchise. She also has appeared in several high-profile fashion campaigns, the BBC noted.
She reportedly earned $30 million last year and came in at No. 14 on the overall list of high earners.
Hollywood's top five moneymakers in 2009 were all film directors and producers -- Michael Bay with $125 million, Steven Spielberg with $85 million, Roland Emmerich with $70 million, James Cameron with $50 million and Todd Phillips with $44 million, the BBC said.
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