Person

Seo Kang-joon

Acting · Born 1993-10-12 · 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

2026A Love Other Than YoursNamgung Ho
2026Boyfriend on DemandSeo Eun-ho
2025Undercover High SchoolJeong Hae-sung
2022GridKim Sae-ha
2021A Year-End MedleyYi-kang
2020When the Weather Is FineIm Eun-seop
2019WATCHERKim Young-Koon
2018The Third CharmOn Joon Young
2018Are You Human?Nam Shin / Nam Shin III
2018Busted!Kang-Joon Seo
2017Idol FeverDo Yun's older brother
2016EntourageCha Young-Bin
2016EntertainerLee Sang-Won
2016Cheese in the TrapBaek In-ho
2015Summer SnowSang-gyu
2015The Beauty InsideWoo-jin 92
2015To Be ContinuedAh-rin's elder brother
2015HwajungHong Joo-won
2014The Best FutureChoi Go
2014My Love, My BrideJoon-soo
2014Bomi's RoomSelf
2014What Happens to My Family?Yoon Eun-Ho
2014RoommateSelf
2014Cunning Single LadyGook Seung-hyun
2013Haneuljae’s Murder尹河
2013The Suspicious HousekeeperChoi Soo Hyuk
2013After School: Lucky or Not
2013Good DoctorOne of the punks who wants to beat Shi On
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

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