Hashtag (Korean: 해시태그), stylized as haShtag or HASHTAG, was a South Korean girl group formed by Luk Factory and produced by former Baby V.O.X member Kan Mi-youn. The group debuted on October 11, 2017, with the EP The girl next door. Hashtag’s original seven members were Hyunji, Sua, Seungmin, Subin, Sojin, Dajeong, and Aeji. Before joining Hashtag, Dajeong participated in Produce 101 Season 1, where she ranked 62nd. In 2018, Hashtag introduced a sub-unit called Purple, with Dajeong, Seungmin, and Subin releasing the digital single Maemmaeya. The group continued to release music, with their second mini album, #Aeji #paSsion, in April 2019, and the digital single My Style in October of the same year. After line-up changes in 2023, with Dajeong and Aeji leaving, Hashtag reformed as a five-member group consisting of Hyunji, Sua, Seungmin, Subin, and Sojin, and released the digital single Diamond in June 2023. However, on October 12, 2024, the group announced their disbandment.