Koo Sung-Hwan

Koo Sung-Hwan (Hangul: 구성환) is a South Korean actor born in 1980. He has built a diverse career performing supporting roles across numerous South Korean films and television series.

Filmography

Koo Sung-Hwan has appeared in multiple feature films spanning various genres, ranging from historical dramas to action and thriller projects.

Selected Film Appearances

Project Silence (2024) – Bus driver
Love, Again (2019) – Assistant Manager Cha
A Taxi Driver (2017) – Auto repair shop employee in Suncheon
26 Years (2012) – Yong-Gu
71: Into the Fire (2010) – Nam-Sik
Sadness in Beauty (2010)
Public Enemy Returns (2008) – Sung-Jin
The Guard Post (2008) – Driver Soldier Byun
Open City (2008) – Detective Lee
A Shark (2007) – Young-Chul
Scout (2007) – Jo Bong-Gu
Low Life (2004) – Choon-Sik
Fighter in the Wind (2004) – Circus troupe Pierrot

Television Career

In addition to his film work, Koo has taken on supporting and guest roles in numerous television and streaming drama series.

Selected Television and Streaming Series

Reverse (Wavve, 2026) – Jae-Yong (ep. 3–4)
Our Universe (tvN, 2026) – Jo Moo-Saeng
Mercy for None (Netflix, 2025) – Detective (ep. 6)
Uncle Samsik (Disney+, 2024) – Koo Hae-Jun
Han River Police (Disney+, 2023) – Oh Joong-Taek
Through the Darkness (SBS, 2022) – Hwang Dae-Sun (ep. 5)
Jirisan (tvN, 2021) – Detective (ep. 6)
Hot Stove League (SBS, 2019–2020) – Lee Joon-Mo
Woman of 9.9 Billion (KBS2, 2019–2020) – Black Bear
Designated Survivor: 60 Days (tvN, 2019) – Lee Kang-Hoon