★ 8.1 
Acting
Seo Kang-joon
Seo Kang-joon is best known for Are You Human?, Running Man, Boyfriend on Demand and Cheese in the Trap. Seo Kang-joon was born on October 12, 1993. Seo Kang-joon is 33 years old (born October 12, 1993).
- Born
- October 12, 1993 (33 years old)
- Place of birth
- Gunpo, Gyeonggi, South Korea
Biography
Lee Seung-hwan (born October 12, 1993), known professionally as Seo Kang-joon, is a South Korean actor and former singer, who was a member of the group 5urprise. He gained recognition with his role in the television series Cheese in the Trap (2016) and has since starred in Are You Human? (2018), Watcher (2019), When The Weather Is Fine (2020), Grid (2022), Undercover High School (2025), and Boyfriend on Demand (2026).
Known for
Filmography
- 2026Boyfriend on DemandSeo Eun-ho
- 2026A Love Other Than YoursNamgung Ho
- 2025Undercover High SchoolJeong Hae-sung
- 2022GridKim Sae-ha
- 2022Just an ExcuseSelf
- 2020When the Weather Is FineIm Eun-seop
- 2019WATCHERKim Young-Koon
- 2018Are You Human?Nam Shin / Nam Shin III
- 2018The Third CharmOn Joon Young
- 2018Busted!Kang-Joon Seo
- 2017Idol FeverDo Yun's older brother
- 2016Cheese in the TrapBaek In-ho
- 2016EntourageCha Young-Bin
- 2016EntertainerLee Sang-Won
- 2015HwajungHong Joo-won
- 2015To Be ContinuedAh-rin's elder brother
- 2014Cunning Single LadyGook Seung-hyun
- 2014RoommateSelf
- 2014What Happens to My Family?Yoon Eun-Ho
- 2014The Best FutureChoi Go
- 2013The Suspicious HousekeeperChoi Soo Hyuk
- 2013Good DoctorOne of the punks who wants to beat Shi On
- 2013After School: Lucky or Not
- 2013Home AloneSelf
- 2012To the Beautiful YouOne of the guys putting ghost makeup on Song Jong Min's group
- 2011Law of the Jungle
- 2010Running Man
- 2010KBS Drama Special
- 2009Melon Music AwardsMessenger
Frequently asked questions
What movies and shows has Seo Kang-joon been in?
Seo Kang-joon is best known for Are You Human?, Running Man, Boyfriend on Demand and Cheese in the Trap.
When was Seo Kang-joon born?
Seo Kang-joon was born on October 12, 1993. (Gunpo, Gyeonggi, South Korea)
How old is Seo Kang-joon?
Seo Kang-joon is 33 years old (born October 12, 1993).
Updated: November 1, 2026 ·