Jo Jung-suk (Korean: 조정석) is a South Korean actor. He began his career in theater, starring in Spring Awakening, Hedwig and the Angry Inch, Grease and 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 Are the Best! (2013), Oh My Ghost (2015), Don't Dare to Dream (2016), Hospital Playlist (2020–2021), as well as films The Face Reader (2013), My Love, My Bride (2014), My Annoying Brother (2016), Exit (2019). With his film Pilot (2024), he won the Baeksang Arts Award for Best Actor.