Molly's Game is a 2017 American biographical film written and directed by Aaron Sorkin (in his directorial debut), based on the 2014 memoir of the same name by Molly Bloom. It stars Jessica Chastain, Idris Elba, Kevin Costner, Michael Cera, Jeremy Strong, Chris O'Dowd, Joe Keery, Brian D'Arcy James, and Bill Camp.

The film follows Bloom (Chastain), who becomes the target of an FBI investigation after the underground poker empire she runs for Hollywood celebrities, athletes, business tycoons, and the Russian mob is exposed.

Principal photography began in November 2016 in Toronto, Ontario, Canada. The film premiered on September 8, 2017, at the Toronto International Film Festival, and began a limited theatrical release in the United States on December 25, 2017, by STX Entertainment, then going to world-wide distribution January 5, 2018, and grossed $59 million worldwide.

Molly's Game received positive reviews, with particular praise for Sorkin's screenplay, as well as Chastain and Elba's performances, with that of the former considered one of the best of her career by some critics. The film earned Chastain a Golden Globe nomination for Best Actress – Drama, while Sorkin earned nominations for his screenplay at the Academy Awards, Golden Globes, Writers Guild of America Awards, and BAFTA Awards.