Choi Yeon-jun (Korean: 최연준; born September 13, 1999), known monomously as Yeonjun (연준), is a South Korean singer and dancer. He debuted on March 4, 2019 as a member of South Korean boy group TOMORROW X TOGETHER under BigHit Music. Yeonjun made his solo debut on September 19, 2024 with the pre-release single GGUM from the single album YEONJUN's Mixtape: GGUM. The album was physically released on October 29, 2024.