Jun (Korean: 준; Japanese: ジュン) is a South Korean singer under Beat Interactive. He is the leader of the boy group A.C.E.
Jun appeared on episode seven of I Can See Your Voice 5. He was known as Suncheon's Kangta and was eliminated in the second round.
In 2017, Jun, along with fellow group member Chan, became a contestant on KBS 2TV's idol rebooting show The Unit. He was eliminated in the episode 4 after achieving 27th place.