Kim Hyung-jun (Korean: 김형준; Hanja: 金亨俊; born August 3, 1987) is a South Korean entertainer, lead rapper and youngest member of boyband SS501 and SS301.
In 2010, Kim left DSP Media, who managed him as part of SS501, and joined S-Plus Entertainment as a solo artist. He made his debut as a soloist in March 2011 with mini album My Girl, and musical debut in Caffeine.In 2012, Kim starred on his first main lead role as Kang-min in KBS Drama's My Shining Girl, followed by SBS Plus's Late Blossom as Jung Min-chae in the same year. At the end of the year, Kim received the Rising Star Award for his role in Late Blossom by the K-Drama Star Awards.
He is also known as Kim Hyeong-jun.