Which J.K. Rowling Harry Potter novel became the fastest-selling book in history at its 2007 launch?

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J.K. Rowling’s Harry Potter and the Deathly Hallows became the fastest-selling book in history at its 2007 launch.

The seventh Harry Potter novel was published on 21 July 2007. It sold more than 11 million copies in the United Kingdom and United States during its first 24 hours, according to contemporary publisher figures.

The novel concludes Harry’s central conflict with Lord Voldemort and answers major questions developed across the series. Its release was surrounded by extraordinary secrecy, with retailers required to protect the plot until the official launch time.

The record describes launch sales, not every copy eventually sold. It is also distinct from the record for a film opening or a book’s total lifetime sales.

Source: Wikipedia · fact-checked Sept. 2026

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