Acting

Seo Kang-joon

Born 1993-10-12 · Gunpo, Gyeonggi, South Korea

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).

Credits

Newest first

A Love Other Than Yours
as Namgung Ho
2026
Boyfriend on Demand
as Seo Eun-ho
2026
Undercover High School
as Jeong Hae-sung
2025
Grid
as Kim Sae-ha
2022
A Year-End Medley
as Yi-kang
2021
When the Weather Is Fine
as Im Eun-seop
2020
WATCHER
as Kim Young-Koon
2019
The Third Charm
as On Joon Young
2018
Are You Human?
as Nam Shin / Nam Shin III
2018
Busted!
as Kang-Joon Seo
2018
Idol Fever
as Do Yun's older brother
2017
Entourage
as Cha Young-Bin
2016
Entertainer
as Lee Sang-Won
2016
Cheese in the Trap
as Baek In-ho
2016
Summer Snow
as Sang-gyu
2015
The Beauty Inside
as Woo-jin 92
2015
To Be Continued
as Ah-rin's elder brother
2015
Hwajung
as Hong Joo-won
2015
The Best Future
as Choi Go
2014
My Love, My Bride
as Joon-soo
2014
Bomi's Room
as Self
2014
What Happens to My Family?
as Yoon Eun-Ho
2014
Roommate
as Self
2014
Cunning Single Lady
as Gook Seung-hyun
2014
Haneuljae’s Murder
as 尹河
2013
The Suspicious Housekeeper
as Choi Soo Hyuk
2013
After School: Lucky or Not
2013
Good Doctor
as One of the punks who wants to beat Shi On
2013
Home Alone
as Self
2013
To the Beautiful You
as One of the guys putting ghost makeup on Song Jong Min's group
2012
Law of the Jungle
2011
Running Man
2010
KBS Drama Special
2010
Melon Music Awards
as Messenger
2009
Nambeol
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