Yoo Ah In

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Yoo Ah In - Biography, Profile, Facts, and Career

Yoo Ah In is a South Korean actor. He’s best known for his roles in Korean movies such as Punch (2011), Veteran (2015), #Alive (2020), and Seoul Vibe (2022).


Yoo Ah In got into the entertainment industry after he was scouted in front of his school.

To pursue a career in the industry, he moved to Seoul and began living by himself. This Libra man then started appearing in TV commercials as of 2003.

In 2004, the man from Daegu made his acting debut in the TV series Sharp. He immediately gained some recognition and popularity. The series helped open up more opportunities for him.

Ah In took part in the film Boys of Tomorrow in 2006. This came after one year hiatus where he reflected on being an actor.

His performance in the film was met with positive reviews all around. He even won the Best New Actor award at Busan Film Critics Awards.

This actor continued to rise into stardom in 2010. At the time, he starred in the hit period drama Sungkyunkwan Scandal. He found even more success the next year with the film Punch.

Over the next few years, Ah In would star in many more hit TV series and films. He found massive success and acclaimed performances.

Some of his most notable works can be seen in Secret Affair (2014), Veteran (2015), Burning (2018), #Alive (2020), and Voice of Silence (2020).

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  • Real Name: Uhm Hong Sik (엄홍식)
  • Stage Name: Yoo Ah In (유아인)
  • Nickname: Kukmin Yeonha-nam (The Nation’s Younger Boyfriend)
  • Birthday: October 6, 1986
  • Birthplace: Daegu, South Korea
  • Zodiac Sign: Libra
  • Nationality: Korean
  • Religion: –
  • Profession: Actor
  • Education: Dankuk University and Konkuk University
  • Hobbies: –
  • Facebook: –
  • Twitter: @seeksik
  • Threads: –
  • Instagram: @hongsick
  • Tiktok: –
  • Youtube: –

Height, Weight, & Physical Appearance 

  • Height: 179 cm (5’10″ 1/2)
  • Weight: 62 kg (136 lbs)
  • Blood Type: A
  • Hair Color: Black
  • Eye Color: Black
  • Body Measurements: 40-34-15 (Bust -40, Waist -34, and Hips -15 inches)
  • Shoe Size: 10 (US)


  • Father: –
  • Mother: –
  • Brother: –
  • Sister: –

Boyfriend, Girlfriend, & Dating History

Song Hye Kyo

Before Song Hye Kyo was married to Song Joong Ki, there were actually rumors that she used to date Yoo Ah In.

The rumors emerged due to their closeness, which often were showcased on their respective social media page.

That being said, the pair denied the rumors and stated that their relationship is nothing more than close friends/sibling-like.


In October 2022, an internet user shared an anonymous online post, claiming that they saw the actor and IU around Paris, France.

Around that time, he reportedly was visiting 2023 summer fashion show by Bottega Veneta, while IU was in Milan, Italy, to attend Gucci Fashion week, which means both of them were in Europe.

In the past, IU used to publicly express her admiration to the actor and admitted that she enjoy watching Sungkyunkwan Scandal in which he starred in.

In addition, he also used to pick her as his ideal type, saying that IU is “lovely and pretty.”

However, neither of them has ever acknowledged the rumors.

Choi Ha Neul

Throughout the years, there were rumors that the actor is actually gay.

The speculation surfaced for the first time when he shared a photo where he sat on a purple sofa and applied lip balm. According to internet users, the sofa was located inside a gay club.

The rumored boyfriend of Yoo Ah In is Choi Ha Neul, a sculptor who attended Seoul National University and Korea National University of Arts in the past.

Neither party has ever confirmed or clarified the dating speculations.

Net Worth 

Multiple sources estimated his net worth to be around $5 million to $10 million. He appears to earn most of his income through working as an actor in the South Korean entertainment industry.


The actor has been involving himself in various philanthropist acts.

For examples, he donated 100 million won from the profit made by his clothing line, Newkids Nohant in 2015 to provide educational expenses and college tuition aids for college students.

He quietly made a donation help relief families of the sinking Sewol Ferry victims in 2014.

In 2016, he donated 40 million won in a form of museum tickets for unfortunate children.


Drug Abuse

Yoo Ah In was investigated for propofol use in early 2023 by the police, who suspected him of receiving the drug ilegally from different doctors’ offices and clinics in Seoul since 2021.

Shortly after, it was announced that he’s tested negative for propofol, but positive for marijuana.

The news made the actor being dropped from various of his acting projects, including The Match and Goodbye Earth.

Further results were announced in the same month, revealing that he’s tested positive for propofol after a detailed hair analysis took place.

In the following month, the police announced that he was also tested positive of ketamine and cocaine.

Plastic Surgery

There is no known information on whether he has undergone any cosmetic surgery to alter his appearance.


  • Ah In is signed under United Artists Agency.
  • He grew up in Daegu.
  • He has two older sisters.
  • This actor moved to Seoul by himself at 15 years old.
  • He takes the stage name Yoo Ah In because the management thought his real name Uhm Hong Sik is too old-fashioned.
  • His stage name Ah In comes from the German word for one.
  • Before becoming an actor, he used to train to be an idol.
  • He was a pretty shy kid.
  • The man from Daegu is the founder and creative director of the art gallery Studio Concrete.
  • He supports the feminist.
  • He has admitted to be an LGBT supporter.
  • In 2015-2017, Ah In used to be the investor and business partner for TMI Fries & Bar.
  • He is known for his philanthropy works.
  • He likes cooking.
  • This Libra man works freelance as a writer.
  • He used to write poems and short story in his diary.
  • He was exempt from mandatory military service due to non-cancerous bone tumor.
  • This Burning actor has made many appearances in documentaries and variety shows.
  • He was in the music video for Only One by BoA, Footprints by T.O, and Starry Night by DJ Peggy Gou.
  • He is said to be one of the most diligent actors in his generation.
  • Ah In is also the most outspoken Korean actor, especially in political and social aspects.
  • He is in the video game Knights of Night.
  • His ideal type is someone who is attractive, calm, intelligent, feminine, and loyal. She also has to have ideas of modern women.
  • He has picked someone like Kim Tae Hee as his ideal type.

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  • The Match (2023), as Lee Chang Ho
  • Seoul Vibe (2022), as Park Dong Wook
  • Voice of Silence (2020), as Tae In
  • #Alive (2020), as Oh Joon Woo
  • Default (2018), as Yoon Jung Hak
  • Burning (2018), as Jong Soo
  • Like for Likes (2016), as No Jin Woo
  • The Throne (2015), as Crown Prince Sado
  • Veteran (2015), as Jo Tae Oh (man from wealthy family)
  • Thread of Lies (2014), as Choo Sang Bak
  • The Satellite Girl and Milk Cow (2014), as voice
  • Tough As Iron (2013), as Gang Chul
  • Punch (2011), as Doh Won Deuk
  • Sky and Ocean (2009), as Jin Goo
  • Antique (2008), as Yang Ki Bum
  • Boys of Tomorrow (2007), as Jeon Jong Dae
  • Skeletons In The Closet (2007), as Shim Yong Tae

Drama Series 

  • Goodbye Earth (Netflix | 2023), as Ha Yoon Sang
  • Hellbound (Netflix | 2021), as Jung Jin Soo
  • Chicago Typewriter (tvN | 2017), as Han Se Joo
  • Descendants of the Sun (KBS2 | 2016), as Bank Clerk Uhm Hong Sik (ep.13)
  • The Roots of Throne (SBS | 2015-2016), as Lee Bang Won
  • Discovery of Love (KBS2 | 2014), as client of Yeo Reum’s carpenter shop (ep.16)
  • Secret Affair (JTBC | 2014), as Lee Sun Jae
  • Jang Ok Jung (SBS | 2013), as Lee Soon
  • Fashion King (SBS | 2012), as Kang Young Gul
  • Sungkyunkwan Scandal (KBS2 | 2010), as Moon Jae Sin
  • He Who Can’t Marry (KBS2 | 2009), as Park Hyeon Kyu
  • Chilwu, the Mighty (KBS2 | 2008), as Hook San
  • April Kiss (KBS2 | 2004), as 16-year-old Kang Jae-sup
  • Sharp 1 (2003), as Yoo Ah In

TV Shows

  • Do-ol Ah-in Going All Directions (KBS1 ⏐ 2019), as himself (Host, co-writer, co-producer)
  • Eyewitnesses of Syria (CBS Mornings ⏐ 2018), as himself (narrator)
  • June Story (2017), as himself (narrator) 
  • Wan-deuk Who Wants to Fly (KBS1 ⏐ 2014), as himself (narrator)
  • Yoo Ah-in’s Launch My Life (Mnet ⏐ 2011), as himself (cast, music curator)

Music Video Appearances 

  • 자유 (Jayu) (2021) – Se So Neon
  • Starry Night (2019) – DJ Peggy Gou
  • ㅎㅎㅎ (Heung-boo) (2016) – DJ Peggy Gou
  • Only One (2012) – BoA
  • Footprints (2004) – T.O


“I believe the smartest move, as an actor, is not to be so self-conscious. Acting in Korea and overseas will not, and cannot, be that different. Instead of dwelling too much on the recent success, staying humble and calmly focusing on the next project might be a good move to make at the moment.”

“I don’t have to define the trophies that have passed my hand in any way. I hope they become my strength rather than a burden.”

“It’s the movie Burning [that made Yoo Ah In who he is now]. It’s a movie that created a new responsibility and will for me to continue my job as an actor. In some ways, I even think that it’s a movie that gave me a new life.

“I want to learn carpentry and furniture design. I’ve always been curious about ways to permeate into other people’s lives other than acting.”

“As much as I try to maintain a young mindset, I would love to see younger actors take up the stage and become the new icons for the youth.”

“When I was younger, there was a part of me that thought western culture is cooler than our own culture. Now, I understand that there is no such thing as a superior or inferior culture. I try to focus more on finding the beauty itself within each culture.” 

“In the past, I wanted to experiment with roles and take up challenges. Now, I’m more careful with my next steps because I feel a greater sense of responsibility. I feel like Yoo Ah-in is made up of many people’s efforts, so I try to be careful about how I portray myself.” 

Pics of Yoo Ah In

1. Ah In looks amazing even in simple clothes

Yoo Ah In - Biography, Profile, Facts, and Career

2. He has the most artistic pictures

Yoo Ah In - Biography, Profile, Facts, and Career

3. Love his tough and rough image

Yoo Ah In - Biography, Profile, Facts, and Career

4. He is killing it in sleeveless shirt

Korean Actor - Biography, Profile, Facts, and Career

5. Ah In always looks super cool

Korean Actor - Biography, Profile, Facts, and Career


Who is Yoo Ah In?

He is a South Korean actor.

Who is Yoo Ah In’s real name?

His real name is Uhm Hong Sik (엄홍식).

What makes Yoo Ah In famous?

He’s best known for his roles in Korean movies such as Punch (2011), Veteran (2015), #Alive (2020), and Seoul Vibe (2022).

Where is Yoo Ah In from?

He was born in Daegu, South Korea.

How old is Yoo Ah In?

He was born in 1986, and he is 38 years old as of 2024.

When does Yoo Ah In celebrate his birthday?

He celebrates on the 6th of every October.

How tall is Yoo Ah In?

His height is 5’10″ or 179 cm.

Who are Yoo Ah In’s parents?

He did not reveal the names of his father and mother.

Is Yoo Ah In married?

He is not married. Furthermore, there is no information on whether he is in a relationship or not.

Who is Yoo Ah In’s ex-girlfriend?

His ex-girlfriend is not known.

How rich is Yoo Ah In?

His net worth is around $5 million to $10 million.

What is Yoo Ah In’s nationality?

His nationality is South Korean.

For years, Yoo Ah In has displayed great acting talent on various films and TV shows. He is definitely one of the top South Korean actors.