Ji Chang-wook (born 5 July 1987) is a South Korean actor and singer. He rose to fame for playing the lead role of Dong-hae in daily drama series Smile Again (2010–2011), and had notable lead roles in television series such as Warrior Baek Dong-soo (2011), Empress Ki (2013–2014), Healer (2014–2015), The K2 (2016), Suspicious Partner (2017), Melting Me Softly (2019), Backstreet Rookie (2020), Lovestruck in the City (2020-2021), and The Sound of Magic (2022).