- Y O O N A (윤아)
- Stage Name: Charming Girl YOONA (매력 소녀 윤아 – maeryeok sonyuh Yoona)
Birth Name: Im Yoon-a (임윤아)
- Nicknames: Yoong, Saseumi (deer), Him Yoona (strong Yoona), Im-choding (elementary school-kid Im), Saebyuk, Alligator Yoong
- Position: Supporting Vocalist/Lead Dancer
Date of Birth: May 30, 1990
Zodiac Sign: Gemini
- Bloodtype: B
- Sibling(s): one older sister
Language: Korean (Fluent), English, Chinese (Basic), Japanese (Basic)
- Specialty: Dance, Acting
- Casted: 2002 SM Saturday Open Casting Audition
- Training: 7 Years 2 Months
- School: Dongguk University (동국대학교) Department of Theater | graduated from Daeyeong High School
- 2004 Elite Student uniforms advertising model
- 2004 MV DBSK – ‘Magic Castle‘
- 2006 CF Teun Teun English
- 2006 CF Sanyo batteries Eneloop
- 2006 CF Elite Student uniforms (with SS501)
- 2006 MV Super Junior - ‘U‘
- 2006 MV CSJH The Grace – ‘My Everything‘ (with Super Junior Kibum)
- 2007 CF Yejimin Pad
- 2007 CF Clean & Clear
- 2007 CF Sunkist Grapefruit/Lemonade (with Super Junior Kangin & Heechul)
- - 2007 Drama MBC ‘9 Ends 2 Outs‘ (as Shin Joo-young)
- 2007 MV Super Junior - ‘Marry U‘
- 2008 MV Lee Seung Chul - ‘Propose‘
- 2008 Drama MBC ‘Park Jung Geum‘ (as Mi-ae)
- 2008 Daily drama KBS ‘You Are My Destiny‘ (as Jang Sae-byuk)
- 2009 MV 24/7 – ‘That Man’s Woman‘
- 2009 CF ‘Clean & Clear’ (with Kim So-eun)
- 2009 Drama MBC ‘Cinderella Man‘ (as Seo Yoo-jin)
- 2009 CF ‘Innisfree‘
- 2010 Variety Show SBS ‘Family Outing season 2′
- 2010 CF ‘S-Oil‘
- 2011 MV SHINee – ‘Replay (Japanese ver.)’
- Widely known as the “center” image of SNSD thanks to her immense popularity among Korean public. Age-wise, she’s also placed in the “center” of SNSD; Seohyun (born in 1991) is a year younger than Yoona (born in 1990) and the other 7 members are one year older and considered as same-age friends (born in 1989 and Sooyoung in early 199o).
- The physically strongest member of SNSD, gained her a nickname Him Yoona (strong Yoona).
- Despite her sweet girlish image, Yoona is actually boyish. One of her well-known nickname is Im-choding (elementary-school boy Im).
- Being the the second youngest of SNSD doesn’t stop her to be one of their biggest prankster.
- SNSD’s second biggest eater after Sooyoung.
- Her claim-to-fame was the hit daily drama ‘You’re My Destiny’ which ratings peaked at 41% viewership. The drama was also her first time as a lead in drama.
- The said drama also gained her popularity among ahjumma (middle-aged women) in Korea.
- Yoona is a fan of Takuya Kimura.
- Yoona claimed that she has more confidence in dancing and acting rather than singing.
- Yoona likes to play bowling in her spare time.
- Nicknamed as ‘Alligator Yoong’ because she laughs with her mouth wide open, resembling an alligator.
- Often picked as the ideal girl by numerous Korean male and female celebrities.