Which J.K. Rowling book was published on 21 July 2007?

Harry Potter and the Deathly Hallows was published on 21 July 2007.

It is the seventh and final novel in J.K. Rowling’s original Harry Potter series. The worldwide publication was coordinated for the early hours of 21 July, creating major midnight release events in bookshops. Readers had waited for the conclusion since Harry Potter and the Half-Blood Prince appeared in 2005.

The story follows Harry, Ron Weasley, and Hermione Granger after they leave Hogwarts to pursue Voldemort’s Horcruxes. Its title refers to three legendary objects—the Elder Wand, the Resurrection Stone, and the Invisibility Cloak—which form one of the book’s central myths.

The novel set major sales records and was adapted into two films, released in 2010 and 2011. It is important to distinguish the publication date from the film dates: the book came first, and the cinematic adaptation’s division into two parts was a production decision rather than a separate ending to the literary series.