Seo Ji-hoon is a South Korean actor under Management Koo. He debuted in the hit drama “Signal” as the villainous Jang Tae Jin. He later landed his first lead roles in “Matching Boys Archery” as the puppy-like Yoo Ji Wan. He enlisted in the military on February 3, 2026

Filmography

• My Youth — Kim Seok-ju
• BEGINS ≠ YOUTH — Kim Hwan
• On/Off — Jang Jun Chul
• Tarot — Woo Jae Yoon [One Person Storage]
• The Destiny Changer — Geum Tae-yeong
• The Midnight Studio — Yoon So Myeong
• My Lovely Liar — Lee Kang-min
• Payback: Money and Power — Developer Cha [Blue Net Developer]
• Revenge of Others — Seok Jae-beom
• Seasons of Blossom — Lee Ha-min
• Imitation — Yoon Bin
• Meow, the Secret Boy — Lee Jae-seon
• To All The Guys Who Loved Me — Park Do-Gyeom
• Touch — [Girl on the plane's boyfriend]
• Flower Crew: Joseon Marriage Agency — Lee Soo
• Mama Fairy and the Woodcutter — Kim Geum
• Misty — Ha Myung Woo [Young]
• My First Love — Young Kang Shin-Woo
• A Special Meal of the Weirdo 'Nara' — Go Shi Saeng
• Drama Stage — Kim Young Hoon
• Mepsi Meow — Yeon Woo
• Prison Playbook — Min Shik [Ji Ho’s friend]
• School 2017 — Yoon Kyung-woo
• 2017The Battleship Island — Joseon Draftee
• Matching! Boys Archery — Yoo Ji Wan
• Signal — Jang Tae-jin
• Solomon's Perjury — Bae Joon-Young
• 2016The Legendary Lackey — Jo Tae-woong
• KBS Drama Special — Jo Tae Woong
• Running Man

Appearances as themselves (1)

• Blue Dragon Series Awards — Self