Lee Jung-jae (Korean: 이정재; born December 15, 1972) is a South Korean actor and former model.
He debuted as a fashion model, then began his acting career on television, notably in the campus series Feelings (1994) and the iconic drama Sandglass (1995). After his acting breakthrough in An Affair (1998), Lee's film career took off. He has starred in a variety of film genres, among them romantic films such as Il Mare (2000) and Over the Rainbow (2002), the melodrama Last Present (2001), well known comedies, such as Oh! Brothers (2003), action films The Last Witness (2001) and Typhoon (2005), heist film The Thieves (2012), film noir New World (2013), and period film The Face Reader (2013). He won Best Actor awards at the Blue Dragon Film Awards for City of the Rising Sun (1999), and at the Fantasporto Director's Week for The Housemaid (2010). In 2021, Lee gained widespread international stardom and fame for his portrayal of Seong Gi-hun in Netflix's survival drama Squid Game.