Baby Boo is a girl group under Hyuna Company. The group's name is based on the lyrics of their first single.

On June 5, 2015 they debuted with their first single Boo Boo Boo with the members Soli, Shine, Saon and Chaei. Somewhere after the release, members Sori and Chaei left the group.

On January 19, 2016 the remaining members released a new single 12 O'Clock. On May 24, Baby Boo added Dabin to the line-up and released another single with her in the group, named Kiss Me. Later the same year, it was announced that Jiyouni was joining the group's line-up later followed by Sehee, turning them into a five-member group.

On January 5th, 2017, Baby Boo released their single Right Now with all five members. The next month, Jiyouni and Sehee left the group. On May 4th, the group released Keep Your Eyes On My Body with the remaining three members.

In 2018, Hajin and Jelly joined the group in May. In July however, Hajin and Jelly left the group. In August, Daon and Dabin also left but would re-debut as Daobin. It November, it was confirmed that the current line-up would exist of members Ha One, Hyo Kyung, Ji Eun, and Shine, causing all original members but Shine to be replaced by new ones.

In 2019, Ji Eun left the group. On February 26 that year, Baby Boo released the single Ring-Ring-Ring.

In 2020, all remaining members left Hyuna Company, causing their unofficial disbandment. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.