Acting
Lee Seung-jun
- Born
- Jan 13, 1995 · Age 31
- Place of birth
- Seoul, South Korea
- Gender
- Male
- Movie credits
- 7
- TV credits
- 8
Also known as (7)
- 제이어스
- 이승준
- Ли Сон Чон
- Seungjun
- 승준
- Сончон
- ONF
Biography
Lee Seung-jun, known mononymously as Seungjun and formerly known as J-Us, is a South Korean singer and lyricist under KI Entertainment. He is a member of the boy group ONF and its OFF team sub-unit.
![2026 ONF CONCERT [THE MAP: BEYOND THE HORIZON] poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2FvQmZPhEa8KrUCwrqRqMpl9pube9.jpg&w=1920&q=75)
![2025 ONF CONCERT [THE MAP:STRANGER’S PATH] poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2FpvF5lXWpkD3HuDDJSXeXtKXlZD1.jpg&w=1920&q=75)
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2 poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2Fwhume1STRxwi0EVBYU8ZMk669nG.jpg&w=1920&q=75)
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1 poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2FzyN3yVwFR1NoZGgxd77aZ4etce7.jpg&w=1920&q=75)
![온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2 poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2F6DhiTgCYAg09SDRLGCktfByp6xD.jpg&w=1920&q=75)
![ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE] poster](/_next/image?url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Fw500%2F4wjPi5x2igYJI9jrbE5QcJhSW8X.jpg&w=1920&q=75)