After the release of the retrospective special Harry Potter 20th Anniversary: Return to Hogwarts, many viewers are unsurprisingly curious as to how old was the cast of Harry Potter was when the first film was made, as well as how old are they In HBO Max's reunion. In the documentary feature, Daniel Radcliffe, Emma Watson, Rupert Grint, and many others revisit the decade that they spent making the massively successful Harry Potter movies. With over a total of $7.7 billion in theater sales, the series still comes in as the 3rd highest-grossing movie franchise of all time, and saw the cast members grow up and evolve together as performers.
Based on J.K. Rowling's wildly successful book series, the Harry Potter saga spanned eight films spread over 10 years. The series featured contributions from four separate directors and a continually diversifying cast list, many of whom are still stars today. Such is the enduring legacy of the wizarding world that Warner Bros. even chose to expand Rowling's Fantastic Beasts and Where to Find Them fantasy guide book into a separate spin-off trilogy – the third installment of which will arrive in 2022.
Unusually for a blockbuster franchise, many of the actors and actresses were only children when they were cast, staying true to the age range established in J.K. Rowling's book series. Over the course of ten years and eight movies, these children grew into teenagers and eventually adults, with the whole world watching them do it. Though there were, unfortunately, some actors missing from the Harry Potter special, here's a breakdown of the ages of each Harry Potter cast member in the reunion.
Daniel Radcliffe as Harry Potter
Now a seasoned screen veteran, Radcliffe is 32 years old. The young actor was only 11 when he was cast as Harry Potter, and 12 when the first film, Harry Potter and the Sorceror's Stone, premiered in 2001. By the last film, Harry Potter and the Deathly Hallows: Part 2, Daniel was just a few days shy of his 22nd birthday.
Emma Watson as Hermione Granger
A similarly experienced performer, Emma Watson is now 31 years old. Watson was the youngest of the main trio, as she was only 10 years old when she got the role of Hermione Granger. She was 21 when the final film premiered.
Rupert Grint as Ron Weasley
At 33 years old, Rupert Grint is the oldest of the main trio. Grint was 12 when he played Ron Weasley in Sorceror's Stone, and 13 by the time it came out. When Deathly Hallows: Part 2 was released, he was 22 years old.
Harry Potter Supporting Cast Members
Tom Felton: 34 years old. In 2001, when the first film premiered, Felton was a little older than the other kid actors at 14 years old. He played the role of Draco Malfoy, and was 23 by the last film.
Robbie Coltrane: 71 years old. Coltrane, who played Hagrid, was 51 at the release of Sorceror's Stone, and 61 for Deathly Hallows: Part 2.
Ralph Fiennes: 59 years old. Fiennes did not enter the series as Voldemort until the fourth film, Harry Potter and the Goblet of Fire. At its release in 2005, he was 42. He was 48 when the franchise ended.
Gary Oldman: 63 years old. Joining the cast as Sirius Black for the third film, Harry Potter and the Prisoner of Azkaban, Oldman was 46 at its release in 2004. He was 53 when he made his last appearance in Deathly Hallows: Part 2.
Bonnie Wright: 30 years old. Wright made her film debut as Ginny Weasley in Sorceror's Stone at age 10. By the end of the series, she was 20 years old.
Helena Bonham Carter: 55 years old. First appearing as Bellatrix Lestrange in Harry Potter and the Order of the Phoenix, Bonham Carter was 41 when the film was released in 2007. In the last film, she was 45.
Jason Isaacs: 58 years old. Isaacs was 39 when he first played Lucius Malfoy in 2002's Harry Potter and the Chamber of Secrets. He was 48 years old in Deathly Hallows: Part 2.
Matthew Lewis: 32 years old. Playing fan-favorite character Neville Longbottom throughout the entire series, Lewis was 12 when the first film premiered, and 22 for the last.
Evanna Lynch: 30 years old. In 2007, Lynch first debuted as Luna Lovegood in the fifth film, Harry Potter and the Order of the Phoenix at age 16. She stayed with the series until it ended when she was 20 years old.
Alfred Enoch: 33 years old. Enoch's first on-screen role was as Dean Thomas in Harry Potter and the Sorceror's Stone when he was 12 years old. At the time of the final film, he was 22.
James and Oliver Phelps: 35 years old. Twin brothers James and Oliver played the mischievous Fred and George Weasley from 2001-2011, spanning the ages of 15 to 25.
Mark Williams: 62 years old. Williams was 43 in 2002 when he appeared as Arthur Weasley in Harry Potter and the Chamber of Secrets. He was 51 by the time of the last film.
Ian Hart: 57 years old. Hart played Professor Quirrel in Harry Potter and the Sorceror's Stone when he was 37.
