Harry James Potter is a fictional character and the titular protagonist in J. K. Rowling's series of eponymous novels. The majority of the books' plot covers seven years in the life of the orphan Harry, who, on his eleventh birthday, learns he is a wizard. Thus, he attends Hogwarts to practise magic under the guidance of the kindly headmaster Albus Dumbledore and other school professors along with his best friends Ron Weasley and Hermione Granger. Harry also discovers that he is already famous throughout the novel's magical community, and that his fate is tied with that of Lord Voldemort – the internationally feared Dark Wizard and murderer of his parents, James and Lily Potter. The book and film series revolve around Harry's struggle to adapt to the wizarding world and defeat Voldemort.

The fictional universe of British author J. K. Rowling's Harry Potter series of fantasy novels comprises two distinct societies: the wizarding world and the Muggle world. In the novels, the Muggle world is the world inhabited by the non-magical majority, with which the wizarding world exists coextensively, albeit mostly remaining hidden from the non-magical humans. The plot of the series is set in 1990s Britain, but in a veiled and separate shadow society wherein magic is commonly used and practised, and those who can use it live in self-enforced seclusion, hiding their abilities from the rest of the world. The term "wizarding world" refers to the global wizard community that lives hidden in parallel with the Muggle world; the different terms refer to different communities within the same area rather than separate planets or worlds. Any new works taking place in this universe are released under the "J. K. Rowling's Wizarding World" brand.