Harry Potter is a book series.
Bloomsbury Publishing plc ( formerly M.B.N. 1 Limited and Bloomsbury Publishing Company Limited ) is a British independent , worldwide publishing house of fiction and non-fiction . Harry Potter is a series of fantasy novels written by British author J. K. Rowling . The original seven books were adapted into an eight-part film series by Warner Bros. . The success of the books and films has ensured that the Harry Potter franchise continues to expand , with numerous derivative works , a travelling exhibition that premiered in Chicago in 2009 , a studio tour in London that opened in 2012 , a digital platform on which J.K. Rowling updates the series with new information and insight , and a pentalogy of spin-off films premiering in November 2016 , among many other developments . Scholastic Corporation is an American multinational publishing , education and media company known for publishing , selling , and distributing books and educational materials for schools , teachers , parents , and children .