| idol_id | 788 |
| Selca owner | snsd_hyoyeon |
| Pop type | K-pop |
| Stage name (romanized) | Hyoyeon |
| Stage name (original) | 효연 |
| Real name (romanized) | Kim Hyoyeon |
| Real name (original) | 김효연(金孝淵) |
| Birth date | 1989-09-22 (age 35) ▲ ▼ |
| Chinese zodiac sign | 🐍 Snake |
| Western zodiac sign | ♍ Virgo |
| Hometown | Incheon |
| Height | 158.0cm (5'2") ▲ ▼ |
| Weight | 46.0kg (101lb) ▲ ▼ |
| Blood type | AB |
| Debut date | 2007-08-05 (17 years and 5 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Debut date | Disbandment date | Current member | Roles | |
|---|---|---|---|---|---|---|
|
(소녀시대)
|
SM Entertainment | 2007-08-05 | Yes | Main dancer |