Yeonjung
- Full/Birth Name:
- Yeon Jung Yu
- Korean Name:
- 연정
- Group:
- I.O.I
- Position:
- Main Vocalist
- Birthday:
- Aug 3, 1999 (26 years old)
- Height:
- 168 cm (5ft 6in)
- Weight:
- 42 kg (93 lbs)
- Origin:
- South Korea
Yeonjung was the main vocalist of I.O.I. She is greatly admired for her powerful vocal technique and wide singing range.