Initially the group had 9 members, due to Jessica's departure in 2014, the group's current lineup consisted of 8 members: Taeyeon, Sunny, Yoona, Hyoyeon, Yuri, Sooyoung, Tiffany and Seohyun. In 2017, the three members: Tiffany, Sooyoung and Seohyun left SM.
1. Taeyon
Birth name: Kim Tae-yeon
Stage name: Taeyeon
Birth date: March 9th 1989
Place of birth: Jeonju, Jeolla-buk, Korea
Height: 1m62
Weight: 44kg
Nationality: Korean
Blood type: O
Role in the group: Leader, main vocalist
Languages: Korean, Japanese, Chinese
School: Jeonju Arts High School
2. Sunny
Birth name: Lee Soon-Kyu
Stage name: Sunny
Birth date: May 15th 1989
Place of birth: Orange County, California, USA
Nationality: Korean
Height: 1m58
Weight: 43kg
Blood type: B
Role in the group: Main vocalist
Languages: Korean, Japanese
School: Baehwa All Girls High School
3. Yoona
Birth name: Im Yoon-ah
Stage name: Yoona
Birth date: May 30th 1990
Place of birth: Yeongdeungpogu, Seoul, Korea
Nationality: Korean
Height: 1m66
Weight: 48kg
Blood type: B
Role in the group: Main dancer, auxiliary vocalist
Languages: Korean, Japanese, English, Chinese
School: Dong Guk University
4. Hyoyeon
Birth name: Kim Hyo-yeon
Stage name: Hyoyeon
Birth date: September 22th 1989
Place of birth: Namdong-gu, Incheon, Korea
Nationality: Korean
Height: 1m58
Weight: 48kg
Blood type: AB
Role in the group: Main dancer
Languages: Korea, Japanese, English, Chinese
School: Beijing High School
5. Yuri
Birth name: Kwon Yuri
Stage name: Yuri
Birth date: December 5th 1989
Place of birth: Deogyang-gu, Gyeonggi, Korea
Nationality: Korean
Height: 1m68
Weight: 45kg
Blood type: AB
Role in the group: Main dancer
Languages: Korea, Japanese, Chinese
School: Chung-Ang University
6. Sooyoung (left the group)
Birth name: Choi Soo-young
Stage name: Sooyoung
Birth date: February 10th 1990
Place of birth: Gangnam-pu, Seoul, Korea
Nationality: Korean
Height: 1m70
Weight: 48kg
Blood type: O
Role in the group: Auxiliary vocalist, dancer
Languages: Korea, Japanese, Chinese
School: Chung-Ang University
7. Tiffany (left the group)
Birth name: Stephanie Hwang
Stage name: Tiffany
Birth date: August 1st 1989
Place of birth: San Francisco, California, USA
Height: 1m62
Weight: 47kg
Blood type: O
Role in the group: Main vocalist
Languages: Korea, Japanese, English, Chinese, Spanish
School: Korea Kent Foreign School
8. Seohyun (left the group)
Birth name: Seo Joo-hyeon
Stage name: Seohyun
Birth date: June 28th 1991
Place of birth: Geumcheon-gu, Seoul, Korea
Nationality: Korean
Height: 1m69
Weight: 48kg
Blood type: A
Role in the group: Main vocalist
Languages: Korea, Japanese, English, Chinese
School: Dong Guk University
9. Jessica (left the group)
Birth name: Jung Soo-yeon
Stage name: Jessica Jung
Birth date: April 18th 1989
Place of birth: San Francisco, California, USA
Nationality: American
Height: 1m63
Weight: 45kg
Blood type: B
Role in the group: Main vocalist
Languages: Korea, Japanese, English, Chinese
School: Korea Kent Foreign School
