Decision to Leave (Korean: 헤어질 결심; Hanja: 헤어질 決心; RR: Heeojil gyeolsim; lit. "Resolution to Break Up") is a 2022 South Korean neo-noir romantic mystery film directed, co-written and produced by Park Chan-wook. The film follows married detective Jang Hae-jun (Park Hae-il), whose investigation of a man's death leads him to the man's widow, Chinese immigrant Song Seo-rae (Tang Wei). Hae-jun's investigation of Seo-rae as a suspect gradually leads him to develop feelings towards her.

In April 2022, Decision to Leave was selected to compete for the Palme d'Or at the 2022 Cannes Film Festival, where Park Chan-wook won Best Director. The film was released theatrically on 29 June 2022 in South Korea. Mubi acquired the distribution rights for several territories, including North America, where it was released theatrically on 14 October 2022. Its streaming premiere began in Mubi on 9 December 2022, where it would later become the company's most streamed film.

Decision to Leave received critical acclaim, being named one of the top five international films of 2022 by the National Board of Review. It was selected as the South Korean entry for Best International Feature Film at the 95th Academy Awards, making the December shortlist. Among the accolades and nominations it received are two BAFTA Award nominations at the 76th British Academy Film Awards, for Best Film Not in the English Language and Best Direction, seven wins from 13 nominations at the 43rd Blue Dragon Film Awards and three wins from seven nominations at the 59th Baeksang Arts Awards.