Marlina the Murderer in Four Acts (Indonesian: Marlina Si Pembunuh dalam Empat Babak) is a 2017 Indonesian neo-Western thriller film directed by Mouly Surya based on a story conceived by Garin Nugroho and a screenplay co-written by Surya and Rama Adi. The film's Western style, its feminist tone, and rural Indonesian setting led to the term "satay Western" being coined following its world premiere in the Directors' Fortnight section of the 2017 Cannes Film Festival.

At the 38th Citra Awards, the film won 10 awards out of 15 nominations, breaking the records for most wins and nominations at Indonesia's top film awards previously held by Teguh Karya's 1986 film Ibunda with 9 awards out of 10 nominations at the 17th Citra Awards. It was also selected as the Indonesian official entry for the Best Foreign Language Film at the 91st Academy Awards, but failed to secure a nomination.