Lee Seung-jun
- Born
- 13 January 1995 (31 years)
- Place of birth
- Seoul, South Korea
- Gender
- Male
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.
