Song Ji Hyo (born Cheon Seong Im) is a South Korean TV and film actress. She became a full-time member of the show "Running Man" after appearing in the 2nd episode. Ji Hyo gained international fame for being the only female member of the show, which made her popularity rise across Asia.
Before Ji Hyo debut as an actress, she was a model for Kiki Magazine. Song made her feature film acting debut in the 2003 Korean horror film "Wishing Stairs". She had her first lead role in the 2004 crime thriller "Some". In 2006, Song started out her first lead role in television drama in the MBC romantic comedy drama "Princess Hours".
Ji Hyo rumored in February 2012 that she had been dating Baek Chang Joo for 3 months at the time, who is also a CEO of C-JeS Entertainment. In July 2015, she officially confirmed that she is no longer with her former boyfriend, and decided to part ways with her management agency, C-JeS Entertainment, following the expiration of her contract.