Seo Kang-joon
Born Oct 12, 1993 · 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).
Known for
Boyfriend on Demand
2026
Undercover High School
2025
Grid
2022
A Year-End Medley
2021
When the Weather Is Fine
2020
WATCHER
2019
Busted!
2018
Are You Human?
2018
The Third Charm
2018
Idol Fever
2017
Cheese in the Trap
2016
Entourage
2016
Entertainer
2016
Hwajung
2015
The Beauty Inside
2015
To Be Continued
2015
Summer Snow
2015
What Happens to My Family?
2014
Cunning Single Lady
2014
The Best Future
2014
My Love, My Bride
2014
Good Doctor
2013
The Suspicious Housekeeper
2013
After School: Lucky or Not
2013
Haneuljae’s Murder
2013
To the Beautiful You
2012
Law of the Jungle
2011
Running Man
2010
KBS Drama Special
2010