"Gee" is a song by South Korean girl group Girls' Generation, who originally recorded a Korean-language version for an extended play (EP) that was released in South Korea by SM Entertainment on January 5, 2009. Nayutawave Records released a Japanese-language version of "Gee" on October 20, 2010, as the group's second single in Japan. Music duo E-Tribe wrote and produced the track, and Kanata Nakamura wrote additional Japanese lyrics.

Girls' Generation, also known as SNSD, is a South Korean girl group formed by SM Entertainment. The group is composed of eight members: Taeyeon, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona, and Seohyun. Originally a nine-piece ensemble, member Jessica departed from the group in September 2014. Among the most known South Korean figures and successful K-pop groups worldwide, Girls' Generation has earned numerous accolades and the honorific nickname "The Nation's Girl Group" in their home country.