Lucy is a 2014 French science fiction action film written and directed by Luc Besson for his company EuropaCorp, and produced by his wife, Virginie Besson-Silla. It is an English-language film shot in Taipei, Paris, and New York City. It stars Scarlett Johansson, Morgan Freeman, Choi Min-sik, and Amr Waked. Johansson portrays the titular character, a woman who gains psychokinetic abilities when a nootropic, psychedelic drug is absorbed into her bloodstream.

The film was released on 25 July 2014 and became a massive box office success, grossing over $469 million, more than eleven times the budget of $40 million. It received generally positive, but also polarized, critical reviews. Although praise was given for its themes, visuals, and Johansson's performance, many critics found the plot nonsensical, especially its focus on the ten percent of the brain myth and resulting abilities.