| idol_id | 45 |
| Selca owner | 4minute_gayoon |
| Pop type | K-pop |
| Stage name (romanized) | Gayoon |
| Stage name (original) | 가윤 |
| Real name (romanized) | Heo Gayoon |
| Real name (original) | 허가윤 (許嘉允) |
| Birth date | 1990-05-18 (age 34) ▲ ▼ |
| Chinese zodiac sign | 🐎 Horse |
| Western zodiac sign | ♉ Taurus |
| Hometown | Seoul |
| Height | 165.0cm (5'5") ▲ ▼ |
| Weight | 50.0kg (110lb) ▲ ▼ |
| Blood type | O |
| Debut date | 2009-06-18 (15 years and 6 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
4minute (포미닛) | Cube Entertainment | 2009-06-18 | 2016-06-16 | Group disbanded |
| Name | Debut date | |
|---|---|---|
|
2Yoon (투윤) | 2013-01-17 |