Seo Kang-joon

Seo Kang-joon

Acting

Born October 12, 1993 (age 32)

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).

Filmography

A Love Other Than Yours
Series
A Love Other Than Yours2026 · Namgung Ho
Boyfriend on Demand
Series
Boyfriend on Demand2026 · Seo Eun-ho
Undercover High School
★ 8.7Series
Undercover High School2025 · Jeong Hae-sung
Grid
★ 6.4Series
Grid2022 · Kim Sae-ha
A Year-End Medley
★ 6.8Movie
A Year-End Medley2021 · Yi-kang
When the Weather Is Fine
Series
When the Weather Is Fine2020 · Im Eun-seop
WATCHER
★ 7.7Series
WATCHER2019 · Kim Young-Koon
The Third Charm
★ 6.1Series
The Third Charm2018 · On Joon Young
Are You Human?
Series
Are You Human?2018 · Nam Shin / Nam Shin III
Busted!
★ 7.7Series
Busted!2018 · Kang-Joon Seo
Idol Fever
Series
Idol Fever2017 · Do Yun's older brother
Entourage
Series
Entourage2016 · Cha Young-Bin
Entertainer
Series
Entertainer2016 · Lee Sang-Won
Cheese in the Trap
Series
Cheese in the Trap2016 · Baek In-ho
Summer Snow
Movie
Summer Snow2015 · Sang-gyu
The Beauty Inside
Movie
The Beauty Inside2015 · Woo-jin 92
To Be Continued
Series
To Be Continued2015 · Ah-rin's elder brother
Hwajung
Series
Hwajung2015 · Hong Joo-won
The Best Future
Series
The Best Future2014 · Choi Go
My Love, My Bride
Movie
My Love, My Bride2014 · Joon-soo
Bomi's Room
Movie
Bomi's Room2014 · Self
What Happens to My Family?
Series
What Happens to My Family?2014 · Yoon Eun-Ho
Roommate
Series
Roommate2014 · Self
Cunning Single Lady
Series
Cunning Single Lady2014 · Gook Seung-hyun
Haneuljae’s Murder
Movie
Haneuljae’s Murder2013 · 尹河
The Suspicious Housekeeper
Series
The Suspicious Housekeeper2013 · Choi Soo Hyuk
After School: Lucky or Not
Series
After School: Lucky or Not2013
Good Doctor
Series
Good Doctor2013 · One of the punks who wants to beat Shi On
Home Alone
★ 8.6Series
Home Alone2013 · Self
To the Beautiful You
Series
To the Beautiful You2012 · One of the guys putting ghost makeup on Song Jong Min's group
Law of the Jungle
★ 8.3Series
Law of the Jungle2011
Running Man
★ 9.1Series
Running Man2010
KBS Drama Special
★ 5.5Series
KBS Drama Special2010
Melon Music Awards
Series
Melon Music Awards2009 · Messenger