5. Zac Efron, 27

t shirt, male, outerwear, arm, black hair,

No list about hot actors under 30 would be complete without a nod to Zac Efron!

Since his debut in High School Musical (2006), Zac has captured the hearts of millions of girls around the world.

Though his hair and personal style have improved a lot throughout the years, his twinkling blue eyes and infectious smile have stayed consistent and helped him maintain a successful career in Hollywood.

Dave Franco, 30
Explore more ...