What was the first Harry Potter book published in 1997?

The first Harry Potter book published in 1997 was Harry Potter and the Philosopher’s Stone.

Bloomsbury published the novel in the United Kingdom on 26 June 1997. It introduced Harry Potter, Hermione Granger, Ron Weasley, Hogwarts School of Witchcraft and Wizardry, and the central conflict involving Lord Voldemort.

The same book was published in the United States under the title Harry Potter and the Sorcerer’s Stone. The American title change is why readers sometimes give a different answer, but Philosopher’s Stone is the original title and the one used in the question.

The book began a seven-volume series. Its success led to translations, audiobooks, stage adaptations, films, merchandise, and theme-park attractions, making Rowling one of the most commercially successful authors in publishing history.