
Let’s Meet the Singer-Turned-Actor Kim Jeong-hoon!
Kim Jeong-hoon is a South Korean singer and actor. He first debuted as a singer in the duo UN with the single “Voice Mail” in 2000 with Choi Jung-won. They were very popular back then both in South Korea or in Japan. But, after 6 years, the duo disbanded, and he has pursued acting ever since.
Profile

Name : Kim Jeong-hoon (김정훈)
Also Known as : John Hoon; Jin Zhen Xun
Birthdate : January 20, 1980
Birthplace : Jinju, South Korea
Height : 179 cm
Weight : 60 kg
Blood Type : AB
Education : Seoul National University (dentistry- dropped out), Chung-ang University (Acting)
Star Sign : Aquarius
Hobbies : Watching movies, playing billiards, listening to music
Favorite food : Samgyeopsal
Favorite sport : Swimming
Agency : Mersenne Entertainment
Website : kimjeonghoon.com
Weibo : jeonghoonkim
Cyworld : jeonghoon0120
Facebook : kimjeonghoonofficial
Instagram : kimjeonghoon0120
Discography

Not stopping after UN disbanded, Kim Jeong-hoon also recorded solo songs and has released several albums. UN, also known as United N-Generation, released 5 albums between 2000 to 2005. The duo initially debuted in 1999, but it wasn’t until June 2000 that they made their first album public.
In an interview with International bnt, he shared insight into the reason for their disbandment. He said that it was because they were both busy with their respective solo careers, so a reunion probably isn’t in their plans.
There were rumors going around about their disbandment, including that they had a bad relationship, but Choi Jung-won said, “We didn’t really fight. There can be collisions when you are together. We didn’t talk for a short while, but then we resolved things.” Kim Jeon-hoon also responded to this by saying “There had been a lot of talk going on about how we disbanded because of our conflicting schedules. However, that wasn’t the reason. It was merely due to our contracts expiring.”
Here is a list of both Kim Jeong-hoon’s solo and duo songs.
Solo
Year | Title | Note |
2006 | Best Album | Mini Album |
5 Stella Lights | 1st Mini Album | |
2007 | “Sad Song” | 1st Single |
“Boku wa Kimi wo Aishiteru” | 2nd Single | |
“Kimi ni Deatta Hi Kara” | 3rd Single | |
Bokutachi Itsuka Mata… | 1st Album | |
2008 | “Sakura TEARS” | 4th Single |
“Kimi wo Mamoritai” | 5th Single | |
“You’re not Alone” | 6th Single | |
Kyo mo Atarashii Yume wo Miru | 2nd Album | |
2009 | “Blue Moon” | 7th Single |
“In Your Eyes” | 1st Single Korea | |
2010 | “Rainy Flash” | 8th Single |
“Al Dente” | 9th Single | |
Machi | 3rd Album | |
2011 | “Present” | 2nd Single Korea |
2012 | Voice | 4th Album |
My Story | 1st Mini Album Korea | |
“Message” | 10th Single | |
Voice 2 | 5th Album | |
Lov…ing | 1st Mini Album Chinese | |
2013 | “Futari Kinenbi” | 11th Single |
“Haru Koi” | 12th Single | |
2014 | LovexBest | 6th Album |
5091 | 2nd Mini Album Korea | |
John Hoon-Do My Best | 1st Best Album | |
2015 | “Special Day” | 13th Single |
2016 | “Harukaze” | 14th Single |
“Marry Me, Marry You” | 3rd Single Korea | |
2017 | Prologue~koi o yobu uta | 15th Single |
Kioku no Kaori | 1st Mini Album Japan | |
2018 | “Ima~yume no yo ni kimi ga” | 16th Single |
UN
Album | Album Information |
1 | United ‘n’ Generation (2000) |
2 | Traveling You (2001) |
3 | Extreme Happiness (2002) |
3.5 | Sweet and Strong (2003) |
4 | Reunion (2004) |
5 | Seventy Five Centimeter (2005) |
6 | Goodbye & Best (2006) |
UN won several music awards, and here is a list of their awards:
- 2001 Korean Music Awards- Daesang
- 2002 SBS Gayo Daejeon- Ballad Category
- 2003 SBS Gayo Daejeon- Producer Award
Kim Jeong-hoon also appeared in music videos of other singers. Check out the MV’s here:
He also made an appearance on the variety show King Masked Singer as ‘The Man in the Flower’. We can hear his great and soothing voice here! See the video below:
Filmography

Kim Jeong-hoon began acting in 2004 in dramas such as the sitcom Orange and a Man and a Woman. However, he made his first major breakthrough when he starred in the hit drama Princess Hours. That was his first door to a path of glory in the acting industry. However, on April 28, 2009, he left the public for mandatory military service. On that day, 80,000 of his fans from Japan, Korea, Turkey, and China gathered to see him off.
He returned from his service on February 28, 2011, and returned to the acting industry one again and showed all of his fans that he still has his acting and singing talents.
Here is a list of his dramas and movies.
Dramas
Year | Title | Role | Broadcast |
2006 | Princess Hours | Prince Lee Yui | MBC |
Fog Street | Lee Yoon-soo | KBS2 | |
2007 | Witch Yoo Hee | Yoo Jun-ha | SBS |
2008 | Love Strategy | Jin Zhen Hao/Kim Jung-ho | Hunan TV |
2011 | I Need Romance | Kim Sung-soo | tvN |
Run60 | Pierro/2nd ghost | TMX | |
2012 | Dummy Mommy | Lee Ja-ha | SBS |
2013 | Love in Her Bag | Do Ji-joo | jTBC |
2015 | Missing Korea | Yoo Jung-hoon | KBS |
Immutable Law of First Love | Park Jong-goo | Naver TVcast | |
2016 | God of War, Zhao Yun | Gao Ze | Hunan Television |
Start Again | Ha Sung-jae | MBC |
Movies
Year | Title | Role |
2004 | DMZ | Kim Ji-hun |
Shut Up! | Kwon Myung-seok | |
2011 | Sunday Punch | Soo-hyun |
2014 | Stray Dogs | So Yoo-joon |
2018 | Pacific Rim: Uprising | Lieutenant Huang |
Thoughts on Dating and Marriage

Currently, Kim Jeong-hoon is reported single. There are no current rumors about him having a girlfriend, either. But, there was a rumor in the past suggesting that he might have dated Yoon Eun-hye. Whether it was true or not at any point in time is still not clear since neither of them has spoken about the matter to this day.
But, he once admitted that he was in a relationship before. When he was asked about marriage plans and dating, he answered, “I don’t think it’s time yet since I haven’t matured. When I was in my early 20’s, I did date someone who was 10 years younger than me, as well as being in a relationship with a foreigner.”