Yoon Ji-sung
- Title: Yoon Ji-sung
- Popularity: 1.831
- Known For: Acting
- Birthday: 1991-03-08
- Place of Birth: Wonju, Gangwon, South Korea
- Homepage:
- Also Known As: 윤지성, 워너원, Wanna One, 尹智圣, Yoon Ji Sung, Jisung, 지성, Чжисон, 김유찬, Kim Yu Chan, Yoon Byeong Ok, 윤병옥