Glass Onion: A Knives Out Mystery (titled onscreen as simply Glass Onion) is a 2022 American mystery film written and directed by Rian Johnson and produced by Johnson and Ram Bergman. It is a standalone sequel to the 2019 film Knives Out, with Daniel Craig reprising his role as master detective Benoit Blanc as he takes on a new case revolving around tech billionaire Miles Bron (played by Edward Norton) and his closest friends. The ensemble cast also includes Janelle Monáe, Kathryn Hahn, Leslie Odom Jr., Jessica Henwick, Madelyn Cline, Kate Hudson, and Dave Bautista.

Johnson had considered several films featuring the Benoit Blanc character before the first film's release. A sequel was greenlit by its original distributor Lionsgate in 2020, but in March 2021 Netflix bought the rights to two Knives Out sequels for $469 million. The cast signed on that May. Filming took place with a $40 million budget on the island of Spetses, Greece, in June and July 2021, and continued in Belgrade, Serbia, until September. The second sequel is in development as of August 2023.

Following its world premiere at the Toronto International Film Festival on September 10, 2022, Glass Onion began a one-week limited theatrical release on November 23, 2022, receiving the widest theatrical release ever for a Netflix film and grossing $15 million; Netflix began streaming it on December 23. Like its predecessor, Glass Onion received critical acclaim, with reviewers praising Johnson's screenplay and direction, the performances of the cast, and the musical score. The National Board of Review named Glass Onion as one of the top ten films of 2022. The film received a nomination for Best Adapted Screenplay at the 95th Academy Awards, and received numerous other accolades.