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

Seo Ji-hoon

Acting Born April 25, 1997 Daegu, South Korea

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

Known For

Running Man

KBS Drama Special

Jo Tae Woong

Drama Stage

Kim Young Hoon

Prison Playbook

Min Shik [Ji Ho’s friend]

Revenge of Others

Seok Jae-beom

Signal

Jang Tae-jin

My Lovely Liar

Lee Kang-min

Meow, the Secret Boy

Lee Jae-seon

Imitation

Yoon Bin

Flower Crew: Joseon Marriage Agency

Lee Soo

The Midnight Studio

Yoon So Myeong

School 2017

Yoon Kyung-woo