| Full Name | Son Chae-young |
| Stage Name | Chaeyoung |
| Native Name | 손채영 |
| Birthday | April 23, 1999 |
| Age | 25 years and 9 months old |
| Zodiac Sign | Taurus |
| Birthplace | Seoul, South Korea |
| Height | 5’3″ (159 cm) |
| Weight | 103.6 lbs (47 kg) |
| Blood Type | B |
| MBTI | INFP-T |
| Education | Hanlim Multi Arts High School |
| Languages | Korean, Japanese, English |
| Group | TWICE |
| Social Media | Instagram: [@chaeyo.0] |