What was the title of J.K. Rowling’s first published book?

J.K. Rowling’s first published book was Harry Potter and the Philosopher’s Stone.

Bloomsbury published the novel in the United Kingdom on 26 June 1997. It introduced the young wizard Harry, his friends Ron Weasley and Hermione Granger, and the magical school Hogwarts. The book began the seven-novel series that made Rowling internationally famous.

In the United States, the same book was published as Harry Potter and the Sorcerer’s Stone in 1998. “Philosopher’s Stone” is the original British title, while “Sorcerer’s Stone” is the American title; these are not two different first books.

The novel won the Nestlé Smarties Book Prize and the British Book Award for Children’s Book of the Year, helping establish its early reputation before the later films.