Han Hyo-joo (born February 22, 1987) is a South Korean film and television actress. She is best known for her leading roles in television drama series: Spring Waltz (2006); Brilliant Legacy (2009); Dong Yi (2010) and W (2016); as well as the film Cold Eyes (2013), for which she won Best Actress at the 34th Blue Dragon Film Awards, and romance film The Beauty Inside (2015).