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.

Filmography

• Taste of Love
• Begin Again — Ha Sung-Jae
• Distressed Beauty — Bao Wenxun
• God of War Zhao Yun — Gao Ze
• Immutable Law of First Love — Park Jong Goo
• Late Night Restaurant — Hyun-sung
• Missing Korea — Head of the Organizing Committee
• Witch's Castle — Gong Joon-Young
• Off To School
• 2014Stray Dogs — So Yoo-jun
• Love in Her Bag — Do Jin-hoo
• Dummy Mommy — Lee Je-ha
• RUN60 — Piero
• I Need Romance — Kim Sung-soo
• 2011Sunday Punch — Soo-hyun
• 대학토론배틀
• 2009Café Seoul
• Love Strategy — 金正浩
• Yu Hee, the Witch — Yoo Joon Ha
• Princess Hours — Prince Yul
• Promise — チョン・ソンウ
• 2004Shit Up!

Appearances as themselves (5)

• Men on a Mission — Self
• The Genius — Self
• Real Romance Love Letter — Self
• X-Man — Self
• 2002Emergency Act 19 — Self - cameo