David Jonathan Heyman (born 26 July 1961) is a British film producer and the founder of Heyday Films. Heyman is best known as the producer of all eight instalments of the Harry Potter film series, which are based on a series of popular fantasy novels of the same name by author J. K. Rowling. He then produced all three instalments of its spin-off prequel series, Fantastic Beasts. His work makes him the second-most commercially successful producer of all time.
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