Son Suk-ku (Son Seok-gu), born on February 7, 1983, in Daejeon, is a South Korean actor, screenwriter, and director. After studying visual arts and film at the School of the Art Institute of Chicago—with the initial ambition of becoming a documentary filmmaker—he completed his military service and volunteered to serve with the Zaytun Division in Iraq.
He began his acting career with a small role in Scarlet Innocence (2014), and then appears in Black Stone and the international series Sense8. In 2018, he gained even more attention thanks to Mother, Suits and above all Marital Chaos. He followed that up the next year with the political thriller Designated Survivor: 60 Days, in which he plays Cha Young-jin.
In 2021, he joined D.P. in the role of Captain Im Ji-seop, which he reprised in the second season in 2023. That same year, he landed his first major film role in the romance Nothing Serious and steps behind the camera to direct and write the segment Rebroadcast of the project Unframed.
The year 2022 marks a major turning point with My Liberation Notes, where his portrayal of the mysterious Mr. Gu made him very popular. On the big screen, he also plays the criminal Kang Hae-sang in The Roundup. He continues with Big Bet (2022–2023), and then played Detective Jang Nan-gam in A Killer Paradox in 2024. That year, he also played the lead role in the film Troll Factory.
In 2025, Son Suk-ku will star in Heavenly Ever After and the thriller Nine Puzzles, alongside Kim Da-mi, while also making a cameo appearance in Virus. In 2026, he continued his international career with the film Bedford Park and plays the lead role in the series The Blue Road. Several film projects, including Ordinary People, are also among his announced projects.
