| Full Name | Choi Yewon |
| Stage Name | Arin |
| Native Name | 최예원 |
| Birthday | June 18, 1999 |
| Age | 26 years old |
| Zodiac Sign | Gemini |
| Birthplace | Busan, South Gyeongnam, South Korea |
| Height | 5’5″ (165 cm) |
| Weight | 99.2 lbs (45 kg) |
| Blood Type | – |
| MBTI | INFP |
| Education | Seoul School of Performing Arts |
| Languages | Korean, English |
| Groups | OH MY GIRL (2015-present) X4 (2022-2023) OH MY GIRL BANHANA (2018-present) |
| Social Media | Instagram: [@ye._.vely618] |