Cho Jung-seok (born 26 December 1980) is a South Korean actor. He began his career in theater, starring in Spring Awakening, Hedwig and the Angry Inch, and the stage adaptation of The Harmonium in My Memory, among many other musicals and plays. After nearly a decade on the stage, Jo made his film debut as a comedic supporting actor in the 2012 box office hit Architecture 101, which became his breakout role. His versatility was further showcased by the television series The King 2 Hearts (2012), You're the Best, Lee Soon-shin (2013), Oh My Ghost (2015), and Don't Dare to Dream (2016), as well as films The Face Reader (2013), My Love, My Bride (2014) and My Annoying Brother (2016).

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Cho Jung-seok is a prominent South Korean actor who built his foundation in musical theater before transitioning into major film and television roles.
He is widely recognized for his breakout comedic performance in Architecture 101 and starring roles in blockbuster films such as Exit and My Annoying Brother.
He works across commercial cinema, television dramas, and high-profile stage musicals, seamlessly balancing lighthearted comedy with dramatic depth.
He gained early critical recognition starring in prominent stage productions including the Korean stagings of Spring Awakening and Hedwig and the Angry Inch.