A Man of Reason is a 2022 South Korean action thriller film directed by Jung Woo-sung, in his feature directorial debut. It stars Jung, Kim Nam-gil, Park Sung-woong, Kim Jun-han and Park Yoo-na. The film had its world premiere at the 2022 Toronto International Film Festival on September 13, 2022, and was released theatrically in South Korea on August 15, 2023.