Known For
Acting
Born
Jan 13, 1995
Place of Birth
Seoul, South Korea
Credits
15 titles
Lee Seung-jun
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.
Known For
![ONF [FOCUS ON AND OFF]](https://image.tmdb.org/t/p/w342/Au7UBGXv8opgUV1V7lUzl4Bu2i2.jpg)
![온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2](https://image.tmdb.org/t/p/w342/6DhiTgCYAg09SDRLGCktfByp6xD.jpg)
Filmography
2026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]
SEUNGJUN
2025 ONF CONCERT [THE MAP:STRANGER’S PATH]
SEUNGJUN
온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2
SEUNGJUN
온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1
SEUNGJUN
온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2
SEUNGJUN
온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 1
SEUNGJUN
ONF [FOCUS ON AND OFF]
SEUNGJUN
ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]
SEUNGJUN
Dive Into ONF
Self
Can I Step In?
Kwon Sang Hae
The Silence Of IDOL
Road to Kingdom
Self - Contestant
Idol Radio
Special DJ
Star Road
Self
Weekly Idol
Self