Lee Jung-jae (Korean: 이정재; born December 15, 1972) is a South Korean actor and filmmaker. Considered one of the most successful actors in South Korea, he has received numerous accolades, including a Primetime Emmy Award, a Screen Actors Guild Award, a Critics' Choice Television Award, six Baeksang Arts Awards, in addition to nominations for a Golden Globe Award and a Gotham Award. Aside from his acting career, Lee is also a businessman, having launched a chain of restaurants in Seoul, as well as founding several businesses including the development company Seorim C&D. He owns several of his businesses with fellow actor and close friend Jung Woo-sung

Born in Seoul, Lee debuted as a fashion model, then began his acting career on television, notably in the 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 dramas such as City of the Rising Sun (1999), romantic films Il Mare (2000) and Last Present (2001), well-known comedies such as Oh! Brothers (2003), action films Typhoon (2005) and Deliver Us from Evil (2020), thrillers The Housemaid (2010) and New World (2013), heist film The Thieves (2012), and espionage films Assassination (2015), Operation Chromite (2016) and Hunt (2022). He won Best Supporting Actor at the 50th Baeksang Arts Awards for his role in The Face Reader (2013).