Cillian Murphy’s son Aran goes viral for uncanny resemblance to father in new interview

Cillian Murphy’s 19-year-old son, Aran Murphy, has attracted widespread attention online after a recent red carpet interview highlighted his resemblance to the Oscar-winning actor.

Clips of Aran speaking with presenter Jodie McCallum at the premiere of HBO’s upcoming comedy-drama Youth quickly gained millions of views.

Heard this wee chat has been doing the rounds today 👀😂 Absolute delight chatting to Aran Murphy at the Youth premiere 🎤 📺Isn’t he just the spit of his Dad 🥹? 💛 Ps this chat was for my own platforms 🙏 So publishers, see you in DMs for licensing 😉 #AranMurphy #CillianMurphy pic.twitter.com/T2jmRuJ1y8

— Jodie McCallum (@jodiepresents) September 12, 2026

While the interview focused on the young actor’s career, viewers soon began commenting on the similarities between Aran and his father.

Social media users pointed to shared facial features, mannerisms, expressions, body language and speech patterns.

He even has the same mannerisms and vocal tone as Cillian. that's his clone 🥹 https://t.co/jUH5AvWROe

— 𝔎𝔞𝔩𝔢𝔦𝔡𝔬𝔰𝔠𝔬𝔭𝔢 𝔈𝔶𝔢𝔡 𝔊𝔦𝔯𝔩 (@thejunebugfreak) September 13, 2026

his voice his face expression everything about him is just like his father. cillian murphy really said copy and paste. https://t.co/X7rmtSM4kf pic.twitter.com/Q3VIrMaK8n

— roxy (@hendrixnroses) September 12, 2026

This is a mini Cillian lol down to the mannerisms. https://t.co/YqOgIO9TYY

— Hange Zoë (@Jeesa_Jay) September 12, 2026

Some viewers also noted similarities in the way the young actor responds to questions, drawing comparisons with the star of Oppenheimer.

The attention comes as Aran Murphy continues to establish an acting career of his own.

He currently appears in two HBO projects, including Youth, created by and starring Sharon Horgan.

The series follows a 50-year-old divorcee navigating relationships, family responsibilities and changes in her life, with Aran playing her adult son.

Aran is also part of HBO’s legal drama War, which features Dominic West and Sienna Miller.

Beyond his television work, Aran is set to appear in Klara and the Sun, Taika Waititi’s adaptation of Kazuo Ishiguro’s science-fiction novel.

The cast includes Amy Adams, Jenna Ortega, Natasha Lyonne and Steve Buscemi.

His father, Cillian Murphy, has built a career spanning 28 Days Later, Inception and Peaky Blinders, before winning the Academy Award for Best Actor for Oppenheimer.