SECRET NUMBER (시크릿넘버) is a South Korean girl group formed under Vine Entertainment talent agency. The group consists of six members: Léa, Dita, Jinny, Soodam, Zuu, Minji & former member Denise.

Lea, Dita, Jinny, Soodam and Denise debuted in 2020, and the other two members–Zuu and Minji—were introduced a year later.

The group shared that their name represents how “everyone has a secret number (password/PIN code) that’s usually a birthday, anniversary, or some other special number,” and that they want to hold that kind of special meaning to the fans. Each passcode star in their logo represents each member.

SECRET NUMBER’s fandom is called LOCKEY (pronounced ‘ROCKY’), which is ‘lock’ and ‘key’ combined, and means “people who become KEYs that open the locked appeal of SECRET NUMBER.”

In May 2020, they debuted with a single album Who Dis?, followed by Got That Boom in November.

SECRET NUMBER won already several rookie awards, including Asia Artist Award 2020 (Best New Female Artist) and Asian Pop Music Awards 2020 (Outstanding Newcomer). Additionally, Billboard Korea named the group among Best Rookie K-pop Groups of 2020.

On February 5th, 2022, Denise announced on her Instagram that her contract with Vine Entertainment had concluded on February 1st, 2022 and she had left the company and group.