SECRET NUMBER (Korean: 시크릿넘버) is a seven-member girl group under Vine Entertainment. They were originally set to debut on March 26, 2020, but it was postponed due to the worldwide outbreak of COVID-19. They debuted on May 19, 2020 with the single "Who Dis?" and had their first comeback six months later with the single "Got That Boom" released on November 4th, 2020.
On September 29th, 2021 Vine Entertainment revealed that member Denise would not be participating in the upcoming comeback due to contract negotiations. This announcement was shortly followed by the announcement of their comeback "Fire Saturday" on October 27th, 2021, with the addition of two new members Minji and Zuu.
On February 5, 2022, Denise announced her departure from the group and Vine Entertainment on Instagram.
On May 12, 2022, Vine Entertainment announced that Secret Number would release their fourth single album on June 8 titled "Doomchita".
On October 28, 2022, Vine Entertainment released a photo teaser for Secret Number fifth single album on November 16 titled "TAP".
On May 9, 2023, Secret Number Official Youtube Channel released a teaser trailer for Secret Number sixth single album on May 24 titled "DOXA", with them expected to be also releasing a song dedicated to Lockey titled "Beautiful One" in the album.
On August 14, 2023, Secret Number Official Accounts released a comeback announcement for Secret Number seventh single album on August 24 titled "STARLIGHT".
Korean: 레아
Japanese: リー
Korean: 디타
Japanese: ディタ
Korean: 진희
Japanese: ジニー
Korean: 민지
Japanese: パク・ミンジ
Korean: 수담
Japanese: スーダム
Korean: 주