| Full Name | Lee Ahin |
| Stage Name | Ahin |
| Native Name | 이아인 |
| Birthday | September 27, 1999 |
| Age | 25 years and 9 months old |
| Zodiac Sign | Libra |
| Birthplace | Wonju, South Korea |
| Height | 5’3″ (160 cm) |
| Weight | 97 lbs (44 kg) |
| Blood Type | A |
| MBTI | – |
| Education | Shanghai United International School |
| Languages | Mandarin, Korean, English, Spanish |
| Group | MOMOLAND (2016-2023, 2025-present) |
| Social Media | Instagram: [@heyitsahin_] TikTok: [@heyitsah1n] |