Sleepless in Seattle is a 1993 American romantic comedy-drama film directed by Nora Ephron, from a screenplay she wrote with David S. Ward and Jeff Arch. Starring Tom Hanks and Meg Ryan, the film follows a journalist (Ryan) who, despite being newly engaged, becomes enamored with a recently widowed architect (Hanks), when the latter's son calls in to a talk radio program requesting a new partner for his grieving father. In addition to Bill Pullman, Ross Malinger, and Rob Reiner, the film features an ensemble supporting cast also consisting of Rosie O'Donnell, Gaby Hoffmann, Victor Garber, Rita Wilson, Barbara Garrick, and Carey Lowell.

Inspired by the romance film An Affair to Remember (1957), Sleepless in Seattle was conceived as a romantic drama by Arch in 1989. Several studios rejected his script, deterred by the idea that its main couple does not meet for nearly the entire film. Ward and Ephron were among several writers hired to re-write the script into a funnier film, with Ephron eventually being promoted to director once Nick Castle departed over disagreeing with her comedic approach. Although both Hanks and Ryan had been favored for the lead roles from the beginning, several other actors expressed interest in both parts, while Hanks often disagreed with Ephron over his character's material. The film was shot mostly in Seattle during the summer of 1992. Several of its most pivotal scenes were filmed on a former naval base due to the city's lack of sound stages, including a recreation of the Empire State Building's observation deck when the New York skyscraper was not available.

Sleepless in Seattle was released on June 25, 1993, to positive reviews, receiving praise for Ephron's writing and direction, as well as Hanks and Ryan's performances. The film was nominated for two Academy Awards at the 1994 ceremony: Best Original Screenplay and Best Original Song. Despite competition from several blockbusters released around that same summer, the film was a surprise commercial success, earning $17 million during its opening weekend (the highest opening for a romantic comedy at the time), and ultimately grossing over $227.9 million worldwide. It was one of the highest-grossing films of 1993, and remains one of the most successful romantic comedies in box office history. The soundtrack was also successful, peaking at number one on the Billboard 200.

Several critics and media publications agree that Sleepless in Seattle is one of the greatest romantic comedy films of all time. The film is also credited with establishing Ephron as a celebrated romantic comedy filmmaker.