Lee Yoo-jun
Lee Yoo-jun is a reliable South Korean actor from Busan, best known as forensic investigator Jung Heon-gi in the hit crime drama Signal (2016).

Beyond the screen.
Lee Yoo-jun is a South Korean actor born on 24 November 1982 in Busan, South Korea. He is a reliable supporting actor who is especially well known for crime and legal dramas, where his calm and honest acting helps police, court and investigation stories feel real.
He is about 180 cm (5 feet 11 inches) tall.
Early life
Lee was born in Busan and studied theatre and film at Kyungsung University's College of Arts. While he was performing in plays in Busan, he auditioned for the film Wind (2009) and won a part, which became his screen debut. After that first film, he moved to Seoul to build his acting career step by step.
Career and breakthrough
After Wind (2009), Lee took many small film and drama roles and worked hard to become a trusted supporting actor. His breakthrough with wider audiences came in Signal (2016), where he played Jung Heon-gi, a forensic investigator in the cold case team. The drama was a huge success, and his careful, believable work in the investigation scenes made a strong impression on viewers.
Popular roles
Lee often plays officers and professionals. In While You Were Sleeping (2017), he played police officer Oh Gyeong-han. In Taxi Driver (2021), he played Wang Min-ho, an inspector who works beside prosecutor Kang Ha-na. In Big Mouth (2022), he played Han Jae-ho across the full series, adding another legal and crime role to his strong list of credits.
Recent work
Lee has continued to work steadily in television in recent years, taking supporting roles in new dramas while fans still return to Signal (2016), Taxi Driver (2021) and Big Mouth (2022) as key highlights of his career. His steady presence makes him one of the familiar faces viewers trust in a good crime story.
A career, chapter by chapter.
Selected drama roles
- Signal — Jung Heon-gi
- Big Mouth — Han Jaeho
- Taxi Driver — Wang Min-ho
- While You Were Sleeping — Oh Gyeong-han
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Selected credits in the Oxfea collection.
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