Kim Joo-hun (Kim Ju-heon), born on March 1, 1980, in Pohang, North Gyeongsang Province, is a South Korean actor known for his roles in Dr. Romantic, It’s Okay to Not Be Okay, Big Mouth and Castaway Diva.
He initially studied sculpture at Andong National University, but turned to acting after completing his military service. A graduate of the Seoul Institute of the Arts, he made his stage debut in 2007 in Gangster No. 1. He then joined the Alleyway Theater Company, where he gained stage experience. In 2013, his portrayal of the poet Yi Sang earned him an award for outstanding theatrical performance.
He appears in the movie Way Back Home (2013), The Accidental Detective (2015) and Last Train to Busan (2016). On television, he made a name for himself in Argon (2017), and then gained popularity thanks to Encounter (2018), alongside Song Hye-kyo and Park Bo-gum.
In 2020, his career took on a new dimension with Dr. Romantic 2, in which he plays the surgeon Park Min-kook, a role that earned him an award at the SBS Drama Awards. That same year, he played the publisher Lee Sang-in in It’s Okay to Not Be Okay and appears in Start-Up and Do Do Sol Sol La La Sol.
In 2021, he starred in Now, We're Breaking Up, and then plays Mayor Choi Do-ha in the thriller Big Mouth (2022). He also participates in Juvenile Justice and Extraordinary Attorney Woo.
In 2023, he will reprise his role in Dr. Romantic 3 and stars as Lee Seo-joon in Castaway Diva.
In 2024, he appears in The Crown Prince Has Disappeared, The Tyrant and the movie Mission: Cross.
In 2025, he starred in When the Stars Gossip, Kick Kick Kick Kick and Unknown Seoul.
Visit 2026, he plays the role of piano teacher Do Hyeon-su in Four Hands, Two Sonatas.
Visit 2027, it is announced in Grand Galaxy Hotel, in which he is set to play CEO Woo.
