Yoo Ah In is a South Korean actor who is best known for his roles in the television period drama Sungkyunkwan Scandal (2010) and the film Punch (2011) which was a critical and box-office success. He won several awards, most significantly Best New Actor by 11th Director's Cut Awards for Antique in 2008.
Uhm Hong-shik dropped out of high school to pursue acting. He had his acting debut in the youth series Sharp 1 (2003) using the stage name Yoo Ah-in. He studied at Konkuk University.
Yoo Ah In starred in the film Punch was directed in 2011 by
- The meaning of the name Yoo: Star