Kim Seo-hyung is a South Korean actress. She is best known for her portrayal as the evil mistress Shin Ae-ri in the SBS revenge drama Temptation of Wife (2008) and as Coach Kim in the JTBC television series Sky Castle (2018), for which she received a Best Actress nomination at the 55th Baeksang Arts Awards. In 2014, she earned the award for Best Lead Actress in a Foreign Language Film at the 3rd Madrid International Film Festival for her performance in the film Late Spring. She also gained international attention for her role in The Villainess, which had its world premiere at the 70th Cannes Film Festival in May 2017. Kim participated in the 1992 Miss Gangwon Pageant and made her acting debut as a KBS talent in 1994.