Which Harry Potter novel became the fastest-selling book in publishing history upon its 2007 release?

Harry Potter and the Deathly Hallows became the fastest-selling book in publishing history upon its 2007 release. It was the seventh and final main Harry Potter novel by J.K. Rowling.

Bloomsbury published the book in the United Kingdom on 21 July 2007. Scholastic released it in the United States on the same date, creating a major coordinated international launch. The novel continued Harry’s conflict with Lord Voldemort and brought the central seven-book story to its conclusion.

The sales record refers to the book’s opening performance, not to every measure of long-term popularity. Guinness World Records recorded exceptionally rapid first-day sales in the United States and United Kingdom, while publishers and retailers reported enormous demand worldwide.

The title is sometimes confused with Half-Blood Prince, which was the sixth novel and also set major sales records. Deathly Hallows is the concluding volume and the title associated with the 2007 fastest-selling-book distinction.