So Yi-hyun is a South Korean actress, with starring and supporting roles in Hyena, Assorted Gems, Gloria, Heartstrings, Glowing She, Cheongdam-dong Alice, and Who Are You?.

Gloria is a South Korean television series starring Bae Doona, Lee Chun-hee, Seo Ji-seok, So Yi-hyun, Oh Hyun-kyung and Lee Jong-won in a tale of romance, survival, overcoming poverty and adversity, and making your dreams come true. It aired on MBC from July 31, 2010 to January 30, 2011 on Saturdays and Sundays at 20:40 for 50 episodes.