Harry Potter is a series of seven fantasy novels written by the British author J. K. Rowling. The books chronicle the adventures of a wizard, Harry Potter and his friends Ronald Weasley and Hermione Granger, all of whom are students at Hogwarts School of Witchcraft and Wizardry. The main story arc concerns Harry's quest to overcome the Dark wizard Lord Voldemort, whose aims are to become immortal, to conquer the wizarding world, subjugate non-magical people, and destroy all those who stand in his way, especially Harry Potter.

Since the release of the first novel Harry Potter and the Philosopher's Stone on 30 June 1997, the books have gained immense popularity, critical acclaim and commercial success worldwide. The series has also had some share of criticism, including concern for the increasingly dark tone. As of June 2011^[update], the book series has sold about 450 million copies, making it the best-selling books series in history and has been translated into 67 languages, and the last four books consecutively set records as the fastest-selling books in history.

Joanne "Jo" Rowling, ( /ˈroʊlɪŋ/) OBE, FRSL (born 31 July 1965), known as J. K. Rowling, is a British novelist, best known as the author of the Harry Potter fantasy series. The Potter books have gained worldwide attention, won multiple awards, sold more than 400 million copies to become the best-selling book series in history and been the basis for a popular series of films, in which Rowling had overall approval on the scripts as well as maintaining creative control by serving as a producer on the final instalment. Rowling conceived the idea for the series on a train trip from Manchester to London in 1990.

Rowling has led a "rags to riches" life story, in which she progressed from living on social security to multi-millionaire status within five years. As of March 2011^[update], when its latest world billionaires list was published, Forbes estimated Rowling's net worth to be US$1 billion. The 2008 Sunday Times Rich List estimated Rowling's fortune at £560 million ($798 million), ranking her as the twelfth richest woman in the United Kingdom.Forbes ranked Rowling as the forty-eighth most powerful celebrity of 2007, and Time magazine named her as a runner-up for its 2007 Person of the Year, noting the social, moral, and political inspiration she has given her fans. In October 2010, J. K. Rowling was named 'Most Influential Woman in Britain' by leading magazine editors. She has become a notable philanthropist, supporting such charities as Comic Relief, One Parent Families, Multiple Sclerosis Society of Great Britain, and Lumos (formerly the Children's High Level Group).