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), It’s Okay, That’s Love (2014), and A Dirty Carnival (2006) and A Frozen Flower (2008).
Jo made his entertainment debut in 1998 as a model for clothing brand Ziozia. In 2000, he began his acting career by starring in the teen drama School 3 and in the second season of the sitcom Nonstop.
In 2001, Jo first drew notice in a supporting role in the television drama Piano, co-starring Go Soo as his stepbrother. He was cast in his first drama leading role in 2002, as an illiterate actor in Shoot for the Stars opposite Jeon Do-yeon.
Meanwhile, on the big screen, Jo starred in three romance-themed films in 2003, notably Kwak Jae-yong’s The Classic, with Son Ye-jin and Jo Seung-woo.
In 2004, Jo returned to television in What Happened in Bali, alongside Ha Ji-won and So Ji-sub. Aside from its high ratings, Jo won the Best Actor awards at both the Baeksang Arts Awards and SBS Drama Awards. In 2005, he starred opposite Go Hyun-jung in her comeback drama Spring Day, a remake of the Japanese drama Hoshi no Kinka (“Heaven’s Coins”).