Acting credits
34
Established
Large and steady acting portfolio.
Actor
Seo Kang-joon
Acting
Career Snapshot
ExplainedThese indicators come from TMDB. They are relative signals, not review ratings.
TMDB popularity
2.6
Moderate attention
TMDB internal trend index. Higher usually means more searches and page activity now.
Movies: 6Series: 28
TMDB ID: 1350000
IMDb ID: nm6324813
Known for: Acting
Born: October 12, 1993
Age: 32
Place of birth: Gunpo, Gyeonggi, South Korea
Gender: Male
Adult content flag: No
Career span: 2009 - 2026
Years active: 18
Average TMDB rating: 7.38
Wikidata: Q15972890
Also known as
서강준 • Seo Kang-jun • Kang-joon Seo • Kang-jun Seo • 이승환 • Lee Seung-hwan • 徐康俊 • سو کانگ جون
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).
Photos
Movies
Movies
Movie credits linked with Seo Kang-joon.
A Year-End Medley
as Yi-kang
2021 Movie
Summer Snow
as Sang-gyu
2015 Movie
The Beauty Inside
as Woo-jin 92
2015 Movie
My Love, My Bride
as Joon-soo
2014 Movie
Bomi's Room
as Self
2014 Movie
Haneuljae’s Murder
as 尹河
2013 Movie
Series
Series
Series credits linked with Seo Kang-joon.
A Love Other Than Yours
as Namgung Ho • 14 eps
2026 Series
Boyfriend on Demand
as Seo Eun-ho • 5 eps
2026 Series
Undercover High School
as Jeong Hae-sung • 12 eps
2025 Series
Grid
as Kim Sae-ha • 10 eps
2022 Series
When the Weather Is Fine
as Im Eun-seop • 16 eps
2020 Series
WATCHER
as Kim Young-Koon • 16 eps
2019 Series
The Third Charm
as On Joon Young • 16 eps
2018 Series
Are You Human?
as Nam Shin / Nam Shin III • 36 eps
2018 Series
Busted!
as Kang-Joon Seo • 1 eps
2018 Series
Idol Fever
as Do Yun's older brother • 10 eps
2017 Series
Entourage
as Cha Young-Bin • 16 eps
2016 Series
Entertainer
as Lee Sang-Won • 2 eps
2016 Series
Cheese in the Trap
as Baek In-ho • 16 eps
2016 Series
To Be Continued
as Ah-rin's elder brother • 12 eps
2015 Series
Hwajung
as Hong Joo-won • 50 eps
2015 Series
The Best Future
as Choi Go • 5 eps
2014 Series
What Happens to My Family?
as Yoon Eun-Ho • 53 eps
2014 Series
Roommate
as Self • 46 eps
2014 Series
Cunning Single Lady
as Gook Seung-hyun • 16 eps
2014 Series
The Suspicious Housekeeper
as Choi Soo Hyuk • 20 eps
2013 Series
After School: Lucky or Not
24 eps
2013 Series
Good Doctor
as One of the punks who wants to beat Shi On • 1 eps
2013 Series
Home Alone
as Self • 1 eps
2013 Series
To the Beautiful You
as One of the guys putting ghost makeup on Song Jong Min's group • 3 eps
2012 Series