
Acting
Mar 7, 1991
Wonju, Gangwon, South Korea
Yoon Ji-sung
Acting
Biography
Yoon Byung Ok, later legally changed to Yoon Ji Sung, is a South Korean singer, dancer, actor, and former member of WANNA ONE (워너원). He graduated from National Traditional Arts High School and later obtained a bachelor's degree in Theater and Film from Myongji College and a master's degree in Performing Arts from Dongguk University. Before debuting, he was a trainee at MMO Entertainment and served as a backup dancer of FIESTAR member Cao Lu. In mid-2017, he participated in the survival competition "Produce 101 Season 2" and managed to end up in 8th place, earning a spot in the resulting project group. He made his debut in August 2017 as WANNA ONE's leader and sub-vocalist with their first mini-album, "1X1=1 (To Be One)". The contract with Swing Entertainment (스윙엔터테인먼트) was made for one year and six months, so the group officially disbanded in January 2019 following their final concert performance. He made his debut as a solo artist in February 2019 with the mini-album "Aside". He then enlisted for his mandatory military service on May 14, 2019, and was discharged on December 13, 2020. After serving, he made his acting debut in November 2021 with a role in the SBS drama "Let Me Be Your Knight". He is now represented by Billions (빌리언스).
Feature Films (1)
Television & Series (23)

Baek Jong-won, whose sharp business acumen and cooking mastery earned him a nickname 'the chef with golden hand,' is here to revive failing restaurants. Owners who bear Master Baek’s harsh criticism and take his advice will make their business fail proof!
Baek Jong-won's Alley Restaurant

A story of romance and healing between one of the world’s greatest idols who is suffering from somnambulism and the doctor who is secretly treating him. Jun’s character Yoon Tae In is an untouchable idol star who is loved all around the world, and a musical genius who believes he is the center of the universe.
Let Me Be Your Knight

Master Key is an interactive variety show where celebrities compete with one another and play various games in order to achieve victory each week. The players have to find those who have the two Master Keys, reasoning through an intense psychological warfare. The viewers become "Watchers" and participate in the game as well. By the number of votes, each star receives special abilities. Who will be chosen by the Watchers and become the final winner?










