YEONJUN

Born: 13 September 1999

Age:

Years Active: 2019–present

Genre/s: K-pop

Label/s: Big Hit

Member of: Tomorrow X Together

Choi Yeon-jun (Korean: 최연준; born September 13, 1999), known mononymously as Yeonjun, is a South Korean singer, songwriter, and dancer. He is a member of the South Korean boy band Tomorrow X Together, formed by Big Hit Entertainment in 2019. He debuted as a soloist in September 2024 with the song "Ggum" and released his first extended play No Labels: Part 01 on November 7, 2025.

Choi Yeon-jun was born on September 13, 1999, in Bundang District, Seongnam, South Korea, as an only child. He lived in the United States for two years to learn English before returning to South Korea. After graduating from Korean Arts High School, he enrolled in Global Cyber University [ko].

Prior to his debut, he trained under Big Hit Entertainment for four years. Throughout his four years of training, Yeonjun became known as the company's "legendary trainee" because he consistently ranked first during monthly evaluations in dance, vocal performance and rap. He is also a former trainee of Cube Entertainment. Yeonjun also appeared as a back up dancer at 2014 Melon Music Awards for a few performances.