What is the name of the play co-written by J.K. Rowling that continues Harry Potter’s story?

The play co-written by J.K. Rowling that continues Harry Potter’s story is Harry Potter and the Cursed Child.

Harry Potter and the Cursed Child is a stage play by Jack Thorne, based on an original story by Thorne, J.K. Rowling and John Tiffany. It begins nineteen years after the events of Harry Potter and the Deathly Hallows.

The story focuses on Harry as an adult employee of the Ministry of Magic and on his son Albus Severus Potter. Draco Malfoy’s son, Scorpius, is also central to the plot. The relationship between the two boys drives much of the drama.

The original West End production opened in London in 2016. The published script is commonly marketed as the eighth story in the Wizarding World, but it is a play script rather than an eighth Harry Potter novel.