Loossemble (Korean: 루셈블) are a South Korean girl group formerly under CTDENM. The group consists of the five members of LOONA: HyunJin (현진), YeoJin (여진), ViVi (비비), Go Won (고원), and HyeJu (혜주) previously known as Olivia Hye (올리비아 혜).

On September 15, 2023 they released their debut, self-titled EP Loossemble with the title track "Sensitive".

On November 29, 2024 CTDENM announced via fancafe that the 5 members of Loossemble have terminated their contracts with the company after over a year. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.