Seo Kang-joon
Where to watch Seo Kang-joon in United States. On screen since 2009. Licensed apps only — 24 titles we track below.
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).
Where to watch their titles
Are You Human?
Nam Shin / Nam Shin III · 2018
The Beauty Inside
Woo-jin 92 · 2015
Running Man
2010
A Year-End Medley
Yi-kang · 2021
Boyfriend on Demand
Seo Eun-ho · 2026
Cheese in the Trap
Baek In-ho · 2016
Good Doctor
One of the punks who wants to beat Shi On · 2013
When the Weather Is Fine
Im Eun-seop · 2020
Grid
Kim Sae-ha · 2022
Undercover High School
Jeong Hae-sung · 2025
Busted!
Kang-Joon Seo · 2018
My Love, My Bride
Joon-soo · 2014
To the Beautiful You
One of the guys putting ghost makeup on Song Jong Min's group · 2012
The Best Future
Choi Go · 2014
To Be Continued
Ah-rin's elder brother · 2015
Cunning Single Lady
Gook Seung-hyun · 2014
WATCHER
Kim Young-Koon · 2019
The Third Charm
On Joon Young · 2018
Home Alone
Self · 2013
Entertainer
Lee Sang-Won · 2016
What Happens to My Family?
Yoon Eun-Ho · 2014
Hwajung
Hong Joo-won · 2015
Entourage
Cha Young-Bin · 2016
Law of the Jungle
2011