Nama Korea : 소녀시대 ; So Nyeo Shi Dae
Nama Jepang : 少女時代 ; ShōJo JiDai
Nama China : Shao Nü Shi Dai
Label : SM Entertainment
Anggota (9) : TaeYeon, Jessica, Sunny, Tiffany, HyoYeon, YuRi, SooYoung, YoonA, SeoHyun.
Official Fanclub: S♥NE [S (So Nyeo Shi Dae) + ONE (Fansnya)]
Official Website: http://girlsgeneration.smtown.com/
Ada Sejak : 2007