Seo Kang-joon

Acting

Seo Kang-joon

Born 12 October 1993 · Gunpo, Gyeonggi, South Korea · 33

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

Highlights

Are You Human?2018 · Series · Nam Shin / Nam Shin III
Running Man2010 · Series
The Beauty Inside2015 · Film · Woo-jin 92
Boyfriend on Demand2026 · Series · Seo Eun-ho
A Year-End Medley2021 · Film · Yi-kang
Good Doctor2013 · Series · One of the punks who wants to beat Shi On

Filmography

Movies

5 films

A Year-End Medley2021 · Film · Yi-kang
Summer Snow2015 · Film · Sang-gyu
The Beauty Inside2015 · Film · Woo-jin 92
My Love, My Bride2014 · Film · Joon-soo
Haneuljae’s Murder2013 · Film · 尹河

Filmography

Series

26 shows

A Love Other Than Yours2026 · Series · Namgung Ho
Boyfriend on Demand2026 · Series · Seo Eun-ho
Undercover High School2025 · Series · Jeong Hae-sung
Grid2022 · Series · Kim Sae-ha
When the Weather Is Fine2020 · Series · Im Eun-seop
WATCHER2019 · Series · Kim Young-Koon
The Third Charm2018 · Series · On Joon Young
Are You Human?2018 · Series · Nam Shin / Nam Shin III
Busted!2018 · Series · Kang-Joon Seo
Idol Fever2017 · Series · Do Yun's older brother
Entourage2016 · Series · Cha Young-Bin
Entertainer2016 · Series · Lee Sang-Won
Cheese in the Trap2016 · Series · Baek In-ho
To Be Continued2015 · Series · Ah-rin's elder brother
Hwajung2015 · Series · Hong Joo-won
The Best Future2014 · Series · Choi Go
What Happens to My Family?2014 · Series · Yoon Eun-Ho
Cunning Single Lady2014 · Series · Gook Seung-hyun
The Suspicious Housekeeper2013 · Series · Choi Soo Hyuk
After School: Lucky or Not2013 · Series
Good Doctor2013 · Series · One of the punks who wants to beat Shi On
To the Beautiful You2012 · Series · One of the guys putting ghost makeup on Song Jong Min's group
Law of the Jungle2011 · Series
Running Man2010 · Series
KBS Drama Special2010 · Series
Melon Music Awards2009 · Series · Messenger