LIGHTSUM (라잇썸) is a six-member South Korean girl group under CUBE Entertainment. The group consists of: Sangah (상아), Chowon (초원), Nayoung (나영), Hina (히나), Juhyeon (주현), Yujeong (유정). Originally an eight member group, Huiyeon (휘연) and Jian (지안) left the group in October, 2022.

They made their debut on June 10, 2021, with the single "Vanilla" and followed with the single album Light a Wish in October that same year.

They released their first EP Into the Light on May 24, 2022 with the lead single Alive. This was the final release to feature former members Huiyeon and Jian, before their departures from the group on October 25, 2022.

On October 11, 2023, they released their second EP Honey or Spice with the title track Honey or Spice. The first comeback as a 6-member group.

On August 7, 2024, they released the digital single "Pose!". Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.