Kim Go-eun (born July 2, 1991) is a South Korean actress. She debuted in the film A Muse (2012) where she won several Best New Actress awards in South Korea. She is also known for her role in the television series Cheese in the Trap (2016), Guardian: The Lonely and Great God (2016), The King: Eternal Monarch (2020), and Yumi's Cells (2021).