- Stage Name: YoonA (윤아)
- Birth Name: Im Yoon Ah (임윤아)
- Nick names : Deer Yoona, Him Yoona (Strength Yoona), Goddess Yoong, Yoong
- Motto : Be confident in everything
- Group Position : Supporting Vocalist
- Languages : Korean (Fluent) , English, Chinese (Basic) , Japanese (Basic)
- DOB: May 30, 1990
- Height: 166cm (168cm or so she states herself)
- Weight: 47kg
- Blood Type: B
- School: Daeyoung High School, 2nd Year