Ex Machina is a 2014 science fiction thriller film written and directed by Alex Garland in his directorial debut. A co-production between the United Kingdom and the United States, it stars Domhnall Gleeson, Alicia Vikander, and Oscar Isaac. It follows a programmer who is invited by his CEO to administer the Turing test to an intelligent humanoid robot.

Ex Machina premiered at the BFI Southbank on 16 December 2014. It was released in the United Kingdom on 21 January 2015, by Universal Pictures International, and in the United States on 10 April 2015, by A24. It grossed over $36.8 million worldwide on a $15 million budget.

Ex Machina received acclaim for its visual effects, screenplay and performances. At the 88th Academy Awards, it won Best Visual Effects and Garland was nominated for Best Original Screenplay. It earned five nominations at the 69th British Academy Film Awards, including Best Actress in a Supporting Role for Vikander and Best Original Screenplay for Garland, and Vikander was also nominated for Best Supporting Actress at the 73rd Golden Globe Awards. Ex Machina has been cited as among the best films of the 2010s.