Seo Kang-joon

Known for: Acting
Born: October 12, 1993
Birthplace: 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

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A Year-End Medley 2021
as Yi-kang
Summer Snow 2015
as Sang-gyu
The Beauty Inside 2015
as Woo-jin 92
My Love, My Bride 2014
as Joon-soo
Bomi's Room 2014
as Self
Haneuljae’s Murder 2013
as 尹河

Credits from TMDB.