- Name: 김효연 / Kim Hyo Yeon
- Also known as: 효연 / Hyoyeon
- Nicknames: Dancing Queen / Princess Fiona
- Profession: Singer, dancer, model and actress
- Birthdate: 1989-Sep-22
- Birthplace: Incheon, South Korea
- Height: 158cm
- Weight: 48kg
- Star sign: Virgo
- Blood type: AB
