Son Seok-koo (Korean: 손석구) also spelled Son Suk-ku, is a South Korean actor. He gained recognition for his roles in the television series Matrimonial Chaos (2018), Designated Survivor: 60 Days (2019), D.P. (2021), and My Liberation Notes (2022), as well as the films Nothing Serious (2021) and The Roundup (2022).