Cillian Murphy's Son Aran, 17, Is Following in His Footsteps With Major HBO Role

Cillian Murphy and wife Yvonne McGuinness’ son Aran Murphy, 17, is proving that he is following in the footsteps of his Oscar-winning dad by starring in the upcoming HBO and Sky series War.

By Bentley Maddox Oct 27, 2025 11:19 PMTags
Watch: Leighton Meester, Adam Brody Share Whether Kids Will Follow in Their Footsteps

Cillian Murphy’s son has some explosive news.

Aran Murphy, the 17-year-old son of the Oppenheimer actor and his wife Yvonne McGuinness, is set to star in the upcoming HBO and Sky series War alongside Dominic West and Sienna Miller, according to an Oct. 22 Instagram announcement from his talent agency.

The legal thriller will see a high-powered tech titan (Dominic) and an international superstar (Sienna) go through a messy divorce as two rival law firms compete to triumph both in the courtroom and the world outside of it, per TV Insider.

While the London-based series will be the teen’s first TV show, he previously starred in the 2022 Irish film Lola and has completed filming Taika Waititi’s movie adaptation of Klara and the Sun, which he stars in alongside Amy Adams, Jenna Ortega and Steve Buscemi, per IMDb.

Though Cillian—who also shares son Malachy, 19, with Yvonne—typically keeps his family life private, he previously detailed how he feels about Aran following in his acting footsteps. 

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“I’m very, very proud of him,” he told Ireland’s Today FM in March 2024. “He’s a great, great actor, so I’m very proud of him.”

But while the Dark Knight actor is excited for his son’s career, he isn’t offering Aran any unsolicited pointers. 

Christopher Polk/Golden Globes 2024 via Getty Images

“He doesn’t need my advice,” the 49-year-old continued. “He’s well able.”

Meanwhile, Cillian took an opportunity to detail the immense gratitude he has for both of his sons and wife while accepting a trophy at the Palm Springs International Film Awards in  January 2024 for his performance in Oppenheimer.

“Because I don't ever really get to do this too often, I want to say thanks to my family," he said at the event, per People. "Two-thirds of them are sitting down there. We had to leave one of them at home doing exams. But just thanks for putting up with me—putting up with the half me and the shadow me and the absent me, the remains of me when I'm doing a film like this or work in general."

He added, "You're always there. I love it. So thanks, guys."

Read on to see more stars whose kids are their mini-mes. 

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Clint Eastwood & Scott Eastwood

Clint Eastwood's fifth child, son Scott Eastwood, has followed in his movie star footsteps by starring in films like Suicide Squad, Snowden, The Fate of the Furious and Pacific Rim.

Jon Bon Jovi & Jake Bongiovi

The Bon Jovi singer and his third child is his mini-me. Pictured: The two appear on either sides of with the musician's wife, Dorothea Bongiovi, and their youngest son Romeo Bongiovi at the Jefferson Awards Foundation' 2017 DC National Ceremony at the Capital Hilton in Washington, DC. in 2017.

Katie Holmes & Suri Cruise

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James Marsden & Jack Marsden

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Kate Moss & Lila Moss

And Kate's daughter is also following in her mom's famous footsteps.

Reese Witherspoon & Ava Phillippe

Here posing for an Instagram snap before the Hot Pursuit premiere in Los Angeles, mom and her daughter have never looked more alike!

Lisa Bonet & Zoë Kravitz

Like mother, like daughter. The two attend the Vanity Fair Oscars party in 2015.

Rumer Willis & Demi Moore

With their matching jumpsuits, sleek hair and glasses, the two look more like twins than mother and daughter! "That moment when you realize you actually are becoming your mother #twinning #imnotmad," Willis joked on Instagram.

Madonna & Lourdes Leon

Pictured here in 2010, the pop icon's daughter is a fashionista just like her mama!

David Beckham & Brooklyn Beckham

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Little Blue stole the show at the 2017 Grammys, and she's totally #twinning with her pops!

Alison Sweeney & Megan Sanov

The Days of Our Lives star and her daughter get in the holiday spirit at Disney On Ice Presents Frozen at the Staples Center. 

Lily-Rose Depp & Vanessa Paradis

The mother-daughter pair looked like virtual twinsies (especially with those matching bobs) at the Chanel fall-winter Haute Couture show in Paris.

Julianne Moore & Liv Freundlich

The Oscar-winner and her daughter both rock the red hair.

Robin Wright & Dylan Penn

The nearly identical stunning stars even dress the same!

Lori Loughlin & Olivia Giannulli

The Fuller House star and her daughter are practically twins at the Summer TCA Press Tour. 

Daniel Day-Lewis & Gabriel-Kane Day-Lewis

The Last of the Mohicans and Lincoln star's young adult son, whose mother is French actress Isabelle Adjani, made his big runway debut at 2015 Paris Fashion Week, walking into the Chanel show with Julianne Moore.

Gillian Anderson & Piper Maru Klotz

The two stunned on the red carpet at the Olivier Awards in London.

Kaia Gerber & Cindy Crawford

If you didn't know better, you might've guessed they were sisters!

Tom Hanks & Colin Hanks

This apple certainly doesn't fall far from the tree!

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Mammia Mia! You can certainly see the family resemblance.

John Legend & Luna Legend

The EGOT winner posted this baby photo of himself, looking exactly like baby Luna on Oct. 6, 2017

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