Juhyeon (주현) is a South Korean singer under Cube Entertainment. She made her official debut in June 2021 as the leader, main dancer, and lead vocalist of the girl group LIGHTSUM.
As a trainee, In October 2017, Juhyeon became a contestant on the reality survival show The Unit where she represented Cube Entertainment. She was eliminated in episode 14 after ranking 25th place. In 2018, she became a contestant on another reality survival show, KBS2's Dancing High. She was eliminated in the second episode.
Juhyeon debuted as a member of the girl group LIGHTSUM on June 10, 2021 with their first single "Vanilla".