Annie Hall is a 1977 American romantic comedy film directed by Woody Allen from a screenplay he co-wrote with Marshall Brickman, and produced by Allen's manager, Charles H. Joffe. The film stars Allen as Alvy Singer, who tries to figure out the reasons for the failure of his relationship with the eponymous female lead, played by Diane Keaton in a role written specifically for her.

Principal photography for the film began on May 19, 1976, on the South Fork of Long Island, and continued periodically for the next ten months. Allen has described the result, which marked his first collaboration with cinematographer Gordon Willis, as "a major turning point",[2] in that unlike the farces and comedies that were his work to that point, it introduced a new level of seriousness. Academics have noted the contrast in the settings of New York City and Los Angeles, the stereotype of gender differences in sexuality, the presentation of Jewish identity, and the elements of psychoanalysis and modernism.

Annie Hall was screened at the Los Angeles Film Festival in March 1977, before its official release on April 20, 1977. The film was highly praised, and along with winning the Academy Award for Best Picture, received Oscars in three other categories: two for Allen (Best Director and, with Brickman, Best Original Screenplay), and Best Actress for Keaton. The film additionally won four BAFTA awards and a Golden Globe, the latter being awarded to Keaton. The film's North American box office receipts of $38,251,425 are fourth-best of Allen's works when not adjusted for inflation.

Considered to be one of the best films ever made, it ranks 31st on AFI's List of the greatest films in American cinema, 4th on their list of greatest comedy films and 28th on Bravo's "100 Funniest Movies". Film critic Roger Ebert called it "just about everyone's favorite Woody Allen movie". The film's screenplay was also named the funniest ever written by the Writers Guild of America in its list of the "101 Funniest Screenplays". In 1992, the United States Library of Congress selected the film for preservation in the National Film Registry as being "culturally, historically, or aesthetically significant."