Jang Hyun-deok (born December 13, 1981), known professionally as Jang Seung-jo, is a South Korean actor, known for his roles in Money Flower (2017–2018), Snowdrop (2021–2022), Familiar Wife (2018), and Chocolate (2019–2020). In recent years, Jang also starred in several other dramas like The Good Detective (2020–2022), As You Stood By (2025), and My Royal Nemesis (2026).