Cosmic Girls (Korean: 우주소녀) is South Korean girl group formed jointly by Starship Entertainment and Yuehua Entertainment. The group made their debut in February of 2016 with 12 members but added a 13th member that July: Seola, Bona, Exy, Soobin, Luda, Dawon, Eunseo, Yeoreum, Dayoung, Yeonjung, Xuanyi, Cheng Xiao, and Meiqi. Xuanyi, Cheng Xiao, and Meiqi (each from Yuehua Entertainment) left in 2023.
The group is also known as WJSN.