The Nutcracker and the Four Realms is a 2018 American fantasy adventure film directed by Lasse Hallström and Joe Johnston and written by Ashleigh Powell and Tom McCarthy. It is a retelling of E. T. A. Hoffmann's short story "The Nutcracker and the Mouse King" and Marius Petipa's The Nutcracker Ballet, about a young girl who finds a Nutcracker doll among the family's gifts and is charged by her parents to take special care of it. The film stars Keira Knightley, Mackenzie Foy, Eugenio Derbez, Matthew Macfadyen, Richard E. Grant, Misty Copeland, Helen Mirren, and Morgan Freeman.

The film was announced in March 2016 with Hallström directing a script by Powell. Much of the cast signed on that summer, and filming began in October at Pinewood Studios, lasting through January 2017. In December 2017, it was announced Joe Johnston would direct a month of reshoots written by Tom McCarthy, with both men eventually receiving co-credits for directing and screenplay, respectively.

The Nutcracker and the Four Realms premiered in Los Angeles on October 29, 2018, and is scheduled to be released by Walt Disney Studios Motion Pictures in the United States on November 2, 2018, in Real D 3D and Dolby Cinema.