| Full Name | Jeong Ha-yeon |
| Stage Name | HaYeon |
| Native Name | 정하연 |
| Birthday | August 1, 2007 |
| Age | 18 years and 1 month old |
| Zodiac Sign | Leo |
| Birthplace | Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do, South Korea |
| Height | 5’6″ (166 cm) |
| Weight | 97 lbs (44 kg) |
| Blood Type | A |
| MBTI | ENTP |
| Education | Lila Art High School |
| Languages | Korean, Japanese, English |
| Group | TripleS |
| Social Media | – |