| idol_id | 847 |
| Selca owner | wjsn_yeonjung |
| Pop type | K-pop |
| Stage name (romanized) | Yeonjung |
| Stage name (original) | 연정 |
| Real name (romanized) | Yoo Yeonjung |
| Real name (original) | 유연정 (兪璉靜) |
| Birth date | 1999-08-03 (age 26) ▲ ▼ |
| Chinese zodiac sign | 🐇 Rabbit |
| Western zodiac sign | ♌ Leo |
| Hometown | Gwangmyeong |
| Height | 165.0cm (5'5") ▲ ▼ |
| Weight | 52.0kg (115lb) ▲ ▼ |
| Blood type | A |
| MBTI | ISTP |
| Debut date | 2016-05-04 (9 years and 5 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | Roles | |
|---|---|---|---|---|---|---|---|
|
I.O.I (아이오아이) | YMC Entertainment, CJ E&M | 2016-05-04 | 2017-01-31 | Group disbanded | Main vocal | |
|
Cosmic Girls (우주소녀 (宇宙少女)) | Starship Entertainment, Yuehua Entertainment | 2016-02-25 | Yes | Main vocal, Maknae |