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Seo Kang-joon
Seo Kang-joon

Seo Kang-joon

Acting•Born October 12, 1993 (age 32)•Gunpo, Gyeonggi, South Korea

Biography

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

Running Man

Running Man

2010•TV Series•
8.2
Home Alone

Home Alone

2013•TV Series•
7.5
KBS Drama Special

KBS Drama Special

2010•TV Series•
7.4
Law of the Jungle

Law of the Jungle

2011•TV Series•
6.0
Undercover High School

Undercover High School

2025•TV Series•
8.0
Busted!

Busted!

2018•TV Series•
7.8
Boyfriend on Demand

Boyfriend on Demand

2026•TV Series•
8.3
Hwajung

Hwajung

2015•TV Series•
4.5

Filmography

2026
A Love Other Than Yours

as Namgung Ho

TV
2026
Boyfriend on Demand

as Seo Eun-ho

TV
2025
Undercover High School

as Jeong Hae-sung

TV
2022
Grid

as Kim Sae-ha

TV
2021
A Year-End Medley

as Yi-kang

Movie
2020
When the Weather Is Fine

as Im Eun-seop

TV
2019
WATCHER

as Kim Young-Koon

TV
2018
The Third Charm

as On Joon Young

TV
2018
Are You Human?

as Nam Shin / Nam Shin III

TV
2018
Busted!

as Kang-Joon Seo

TV
2017
Idol Fever

as Do Yun's older brother

TV
2016
Entourage

as Cha Young-Bin

TV
2016
Entertainer

as Lee Sang-Won

TV
2016
Cheese in the Trap

as Baek In-ho

TV
2015
Summer Snow

as Sang-gyu

Movie
2015
The Beauty Inside

as Woo-jin 92

Movie
2015
To Be Continued

as Ah-rin's elder brother

TV
2015
Hwajung

as Hong Joo-won

TV
2014
The Best Future

as Choi Go

TV
2014
My Love, My Bride

as Joon-soo

Movie
2014
Bomi's Room

as Self

Movie
2014
What Happens to My Family?

as Yoon Eun-Ho

TV
2014
Roommate

as Self

TV
2014
Cunning Single Lady

as Gook Seung-hyun

TV
2013
Haneuljae’s Murder

as 尹河

Movie
2013
The Suspicious Housekeeper

as Choi Soo Hyuk

TV
2013
After School: Lucky or Not
TV
2013
Good Doctor

as One of the punks who wants to beat Shi On

TV
2013
Home Alone

as Self

TV
2012
To the Beautiful You

as One of the guys putting ghost makeup on Song Jong Min's group

TV
2011
Law of the Jungle
TV
2010
Running Man
TV
2010
KBS Drama Special
TV
2009
Melon Music Awards

as Messenger

TV

Personal Info

DepartmentActing
BirthdayOctober 12, 1993
Place of BirthGunpo, Gyeonggi, South Korea
Popularity1.3