Biography
Yoo Yeon-seok is a South Korean actor. Born Ahn Yeon-seok on 11 April 1984 in Seoul, he made his screen debut in 2003 in a small role in Park Chan-wook’s Oldboy, credited as Ahn Yeon-seok. He resumed acting in 2008 after military service and university studies.
He is known for film roles in Architecture 101 (2012), A Werewolf Boy (2012) and The Beauty Inside (2015), and for television performances in Mr. Sunshine (2018), Hospital Playlist (2020) and When the Phone Rings (2024). In 2025 he appeared as Chin-ho in No Other Choice, again working with director Park Chan-wook. Yoo graduated from Sejong University with a degree in film arts.
