Seo Kang-joon is a South Korean actor and singer, who is a member of the group 5urprise. He gained recognition with his role in the television series Cheese in the Trap and has since starred in Entourage, Are You Human Too?, The Third Charm, Watcher, When The Weather Is Fine, and Grid. In 2016, he achieved major success when he starred in a series titled Cheese in the Trap. Seo has also appeared in a few music videos and serves as a singer in a band called 5urprise.

Birth Name

Lee Seung-hwan


Seo Kang-joon


Actor, Singer, Model




Vocals, Piano


Fantagio, King Records


South Korean

Personal Life

Birthday / Date of Birth

Seo Kang-joon was born on the 12th of October 1993, in Gunpo, Gyeonggi Province, South Korea.


He’s currently 29 years old.

Sun Sign




He has South Korean ancestry.





Seo attended Dong Seoul College‘s Faculty of Performing Arts. Also, he previously studied in Malaysia for 1 year and 7 months.

Family Details

  • Father – Unknown
  • Mother – Unknown
  • Siblings – Unknown

Marital Status


Girlfriend / Spouse

Seo Kang-joon has dated –

Seo has largely opted to keep his personal life away from the public spotlight, which makes it difficult for us to say anything about his love life and dating history.

Physical Statistics


  • In feet – 6 feet 0 inches
  • In centimeters – 183 cm
  • In meters – 1.83 m


  • In Kilograms – 70 kg
  • In Pounds – 154 lbs

Body Build


Eye Color

Dark Brown

Hair Color

Dark Brown

Shoe Size

He wears a size 11.5 (US) shoe.



Professional Statistics

Famous For

Seo became known for being a member of the first-ever South Korean actor group, 5urprise alongside Yoo Il, Gong Myung, Kang Tae-oh, and Lee Tae-hwan. Moreover, he has also appeared in many films and shows like The Beauty Inside, Are You Human?, Cheese in the Trap, What Happens to My Family?, and Cunning Single Lady.

Film Debut

In 2014, Kang-joon had his first film onscreen role in the movie My Love, My Bride as Joon-soo.

Television Debut

In 2012, Seo landed his first role in television by appearing as Student (ep.3,7) in the series, To the Beautiful You.

Singing Debut

With 5urprise, Kang-joon has worked on several albums like From My Heart, Shake It Up, and 5urprise Flight.

Seo Kang-joon Net worth

Seo Kang-joon has an estimated net worth of $2.5 million dollars as of 2023.

Social Media Profiles

Some Lesser Known Facts About Seo Kang-joon

  • Seo was born in Gunpo, Gyeonggi Province, South Korea.
  • In the second year of secondary school, Seo went to study abroad in Malaysia for one year and seven months and returned to Korea in the first year of high school.
  • In 2014, he brought to life the character of Gook Seung-hyun in the drama romantic comedy television series, Cunning Single Lady. Kang-joon received critical praise for his performance as well as won the 7th Korea Drama Award for Best New Actor.
  • In 2018, Seo was cast as Nam Shin/Nam Shin III sci-fi romantic television series, Are You Human?, and this role won him a KBS Drama Award in the Excellence Award, Actor in a Mid-length Drama category.
  • In 2020, he co-starred as Im Eun-seob in the drama sitcom, When the Weather Is Fine alongside Park Min-young.
  • He is friends with the Astro member Cha Eun-woo.
  • On November 8, 2021, Kang-joon would enlist in the military on November 23, 2021. Later, the same day, Seo’s agency confirmed that he would enlist in the military on November 23, without revealing his location.
  • Seo received the division commander’s commendation for excellent performance in basic military training.


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