8½ (Italian: Otto e mezzo [ˈɔtto e mˈmɛddzo]) is a 1963 Italian avant-garde arthouse comedy-drama film co-written and directed by Federico Fellini. The metafictional narrative centers on famous Italian film director Guido Anselmi (Marcello Mastroianni) who suffers from writer's block as he attempts to direct an epic science fiction film. Claudia Cardinale, Anouk Aimée, Sandra Milo, Rossella Falk, Barbara Steele, and Eddra Gale portray the various women in Guido's life. The film was shot in black and white by cinematographer Gianni Di Venanzo and features a score by Nino Rota, with costume and set designs by Piero Gherardi. Throughout its run Fellini also uses surrealist passages to increase the film's fantastical atmosphere.

8½ was critically acclaimed and won the Academy Award for Best Foreign Language Film and Best Costume Design (black-and-white). It is acknowledged as an avant-garde film and a highly influential classic. It was ranked 10th on the British Film Institute's The Sight & Sound Greatest Films of All Time 2012 critics' poll and 4th by directors. It is included in the Vatican's compilation of 45 important films made before 1995, the 100th anniversary of cinema. The film ranked 7th in BBC's 2018 list of The 100 Greatest Foreign Language Films voted by 209 film critics from 43 countries around the world.

It was included on the Italian Ministry of Cultural Heritage's 100 Italian films to be saved, a list of 100 films that "have changed the collective memory of the country between 1942 and 1978". It is considered to be one of the greatest and most influential films of all time.