Kim Jeong-hoon
- Birthday: 1/20/1980
- Place of birth: Jinju, South Gyeongsang, South Korea
- Fame for: Acting
- Also known as: John Hoon, 김정훈, Kim Jung-hoon, Kim Jung-hun, JeongHun Kim , 金楨勳, Jin Zhen Xun, 金桢勋, Jin Zhen-xun, Jin Zhenxun, Zhenxun Jin
- Social networks: Instagram
Biography
Kim Jeong-hoon (김정훈) is a South Korean actor and former singer as a member of the duo UN. He is known in Japan under the name John Hoon.