Sung Do-Hyun: South Korean Actor Biography

Sung Do-Hyun (Hangul: 성도현) is a South Korean actor known for his extensive supporting roles across film and television. Born on February 9, 1981, in South Korea, he stands at 187 cm with blood type A. Throughout his career, he has appeared in numerous high-profile South Korean cinematic releases and television drama series.

Portrait photograph of Sung Do-Hyun — Sung Do-Hyun profile photograph

Film Career

Sung has built a diverse filmography participating in projects across various genres, ranging from historical dramas to contemporary thrillers. Some of his notable film credits include:

Blesser (2024) - Jin-Myeong
Drown (2022) - Dong-Jin
The 8th Night (2021) - Police officer
On the Line (2021) - Detective 3
Seobok (2021) - NIS agent (control room)
Beasts Clawing At Straws (2020) - Violent man
Mr. Zoo: The Missing VIP (2020) - Sergeant Choi
Another Child (2019) - Section Chief Sung
Idol (2019) - Detective 1
Monstrum (2018) - Soldier 1
A Taxi Driver (2017) - Soldier at byway checkpoint
Confidential Assignment (2017) - Censor
Northern Limit Line (2015) - Yoon Young-Ha's friend

Television and Streaming Series

In addition to his film work, Sung has appeared in several notable television and streaming drama series:

We Are All Trying Here (JTBC, 2026) - Poetry student (ep. 12)
Phantom Lawyer (SBS, 2026) - Choi Min-Hyuk
Aema (Netflix, 2025) - Jeong-Hun (ep. 2)
Squid Game Season 3 (Netflix, 2025) - Team Leader Kim
Squid Game Season 2 (Netflix, 2024) - Team Leader Kim
Mask Girl (Netflix, 2023) - Detective team leader (ep. 7)
L.U.C.A.: The Beginning (tvN, 2021) - Hwang Jung-A's subordinate
Kingdom Season 2 (Netflix, 2020)