Jo In-sung (Hangul: 조인성; born July 28, 1981) is a South Korean actor. He is best known for his leading roles in the television series What Happened in Bali (2004), That Winter, the Wind Blows (2013), and It's Okay, That's Love (2014), as well as the films A Dirty Carnival (2006) and A Frozen Flower (2008).