"It's going to define me for the last chapter of my life, I'm afraid." John Lithgow is heading to Hogwarts. The 3rd Rock From the Sun star confirmed recent rumors that he'll be playing Professor Albus Dumbledore on HBO's forthcoming Harry Potter TV series in an interview with Screenrant published Tuesday.

John Lithgow is opening up about about joining HBO's Harry Potter series where he will take on the role of Albus Dumbledore.

John Lithgow confirmed in a new interview with ScreenRant that he will be playing Albus Dumbledore in HBO’s “Harry Potter” television series. Variety reported earlier this month that Lithgow was eyeing the role.

HBO’s upcoming “Harry Potter” series has found its Professor Albus Dumbledore in actor John Lithgow — known for his previous roles in “Conclave,” “The Crown” and “Footloose.” Lithgow confirmed to Screenrant that he had committed to the role as Headmaster of Hogwarts School of Witchcraft and Wizardry.

EXCLUSIVE: Following recent reports, actor John Lithgow now confirms that he will play Albus Dumbledore in HBO's upcoming Harry Potter TV show.

"It's going to define me for the last chapter of my life, I'm afraid. But I'm very excited," the veteran actor said of the iconic role.

John Lithgow being cast as Dumbledore in the upcoming "Harry Potter" series is more significant than you might think

One thing about John Lithgow that is undeniable is that he is very much not English. Nevertheless, he's been picked to play the very, very English icon Dumbledore in HBO's upcoming "Harry Potter" series.

John Lithgow is off to Hogwarts. The actor, 79, is set to play Professor Albus Dumbledore on HBO’s new “Harry Potter” series. After Pop Base posted the news to X, one user wrote: “He is perfect for the role!