Kim Yoon-sik (; born May 18, 1998), formerly known as Yoon Do-gun (), is a South Korean actor. He is best known for his roles in Trade Your Love (2019), I Am a Running Mate (2025), and The Prosecutor's Proposal (2026).
Career Yoon began his acting career in 2018, appearing in web dramas High School Diary and MU:D Vol.1. He made his feature film debut in Trade Your Love (2019) and his first television appearance on KBS Joy's talk dating variety show Love Naggers. In 2025, he signed an exclusive contract with Log Studio.
Filmography Film Year Title Role Notes 2021 Trade Your Love Jung Ju-seok
Television series Year Title Role Notes 2021 Hospital Playlist Season 2 2025 I Am a Running Mate Kang Jae-won 2027 50 Days of Flirting Yang Ji Hun
Web series Year Title Role Notes 2018 High School Diary MU:D Vol.1 Woo-jin 2022 I'm Done Guk-eul 2026The Prosecutor's ProposalJu Tae-seon
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