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Seo Kang-joon
AKA: 서강준 · Seo Kang-jun · Kang-joon Seo · Kang-jun Seo · 이승환
Acting
Born: 1993
Gunpo, Gyeonggi, South Korea
21 Global Credits
🔥 1.5 Popularity
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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
A Love Other Than Yours
Namgung Ho
2026 · KR
Boyfriend on Demand
Seo Eun-ho
2026 · KR
Undercover High School
Jeong Hae-sung
2025 · KR
Grid
Kim Sae-ha
2022 · KR
When the Weather Is Fine
Im Eun-seop
2020 · KR
WATCHER
Kim Young-Koon
2019 · KR
The Third Charm
On Joon Young
2018 · KR
Are You Human?
Nam Shin / Nam Shin III
2018 · KR
Full Credits
| Show / Title | Year | Credit / Role |
|---|---|---|
| A Love Other Than Yours | 2026 | Namgung Ho |
| Boyfriend on Demand | 2026 | Seo Eun-ho |
| Undercover High School | 2025 | Jeong Hae-sung |
| Grid | 2022 | Kim Sae-ha |
| When the Weather Is Fine | 2020 | Im Eun-seop |
| WATCHER | 2019 | Kim Young-Koon |
| The Third Charm | 2018 | On Joon Young |
| Are You Human? | 2018 | Nam Shin / Nam Shin III |
| Busted! | 2018 | Kang-Joon Seo |
| Idol Fever | 2017 | Do Yun's older brother |
| Entourage | 2016 | Cha Young-Bin |
| Entertainer | 2016 | Lee Sang-Won |
| Cheese in the Trap | 2016 | Baek In-ho |
| Hwajung | 2015 | Hong Joo-won |
| The Best Future | 2014 | Choi Go |
| Cunning Single Lady | 2014 | Gook Seung-hyun |
| The Suspicious Housekeeper | 2013 | Choi Soo Hyuk |
| After School: Lucky or Not | 2013 | Contributor |
| To the Beautiful You | 2012 | One of the guys putting ghost makeup on Song Jong Min's group |
| Law of the Jungle | 2011 | Contributor |
| Melon Music Awards | 2009 | Messenger |