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Zac Efron may be one of Hollywood’s most recognizable faces, but behind the fame, he shares a close bond with his three siblings, who keep him grounded. The High School Musical star has a younger brother, Dylan, and two much younger half-siblings, Olivia and Henry Efron, from his father’s later relationship. Together, the Efron siblings represent a tight-knit, supportive family that balances Hollywood success with genuine connection. Here’s what to know about the Hollywood elite’s brothers and sister.

Zac Efron’s eldest younger sibling, Dylan Efron, 33, is making waves on reality TV

Dylan Efron, the younger brother of actor Zac Efron, has carved out his own path in the entertainment and adventure world while maintaining a close bond with his famous sibling. Born on Feb. 6, 1992, in San Luis Obispo, California, he’s not as deeply embedded in Hollywood’s acting scene. But Dylan has worked behind the camera as a producer and filmmaker, contributing to projects like Down to Earth with Zac Efron and producing content for major brands and travel documentaries.

His creative eye and love for adventure have earned him a strong following on social media and YouTube. He shares breathtaking travel photography, extreme sports videos, and environmental awareness content.

Dylan told BroBible that while Zac, who’s five years his senior, loved the spotlight, he preferred life behind the camera.

“Zach’s comfortable being other people on camera, he’s so talented at that,” Dylan explained. “There was a time when I would ask myself, ‘Well, Zach’s an actor. Can I do that type of thing?’ I don’t think I have that skill, but if you put me in funny situations, I am able to be myself.”

Dylan also noted that he grew up constantly fighting with Zac because of their differences. Thankfully, they were able to grow closer in adulthood. “And then once I graduated college, Zac really took me under his wing and let me live with him when I got my first job in Los Angeles,” Dylan told the publication. “He really became that older brother, and that’s when I would say we grew closer than ever.”

Most recently, Dylan is known for competing on Dancing With the Stars Season 34. He dedicated his “Rewrite the Stars” performance to his little sister, Olivia. And before this reality TV stint, he competed and won The Traitors Season 3.

Zac Efron has a younger half-sister, Olivia Efron, 5

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Olivia Efron is the youngest daughter of Zac and Dylan Efron’s father, David Efron, on Dec. 25, 2019, making her the half-sister of the Hollywood star. While she has largely grown up out of the public spotlight, Olivia occasionally appears in family photos shared by her older brothers on social media, giving fans glimpses into the close-knit Efron family dynamic. Her presence has been described as a source of joy for Zac, who often emphasizes the importance of family amid his busy Hollywood career.

Though still a child, Olivia has already formed a strong bond with her siblings. Zac frequently shares playful moments with both Olivia and her younger brother, Henry, highlighting his role as a protective and affectionate older brother. Dylan also shares moments on social media with Olivia. Before his Dancing With the Stars performance, he posted behind-the-scenes photos with his little sister, naming her the “cutest” member of the team.

Dylan also opened up to People about asking Olivia to join him on stage for his “Dedication Night” dance.

“When I first asked her if she would do this with me, she buried her head in my chest and was like, ‘No, there’s no way,'” Dylan said. “And then she came to the first week, and she told me after, she’s like, ‘I’m thinking about it.’ Week two, she said she’ll do it and that she’s not afraid of anything. And then she showed up and actually didn’t get afraid of anything.”

Henry Efron is the youngest sibling of the bunch

Henry Efron is the youngest sibling in the Efron family, born after Olivia. He is the son of David Efron and his second wife, making him the half-brother of actor Zac Efron and his brother, Dylan. Despite his young age, Henry has become a beloved figure among fans of the Efron family, often featured in social media posts by his older brothers.

Zac and Dylan frequently share moments from their outings with Henry, such as hikes and family gatherings, showcasing their strong sibling bond. For instance, in June 2023, Zac posted a photo of himself holding Olivia and Henry at a circus, highlighting their close-knit family dynamic. Although Henry is not yet in the public eye, his presence in the Efron family adds to the warmth and joy that Zac and Dylan often express.

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