| Birth Name | Yoo Kyung-wan (유경완), legalized to Yoo Jeong-yeon (유정연) |
| Stage Name | Jeongyeon (정연) |
| Birthday | November 1, 1996 |
| Nationality | South Korean |
| Height | 169 cm |
| Weight | 50 kg |
| Blood Type | O |
| MBTI | ESFJ |
| Group | TWICE |
| Company | JYP Entertainment |
| Position | Lead Vocalist |
| Zodiac Sign | Scorpio |
| Chinese Zodiac Sign | Rat |