Belfast is a 2021 British coming-of-age drama film written and directed by Kenneth Branagh. The film stars Caitríona Balfe, Judi Dench, Jamie Dornan, Ciarán Hinds, Colin Morgan and Jude Hill. The film, which Branagh has described as his "most personal", follows a young boy's childhood in Belfast, Northern Ireland, at the beginning of The Troubles in 1969.

Belfast had its world premiere at the 48th Telluride Film Festival on 2 September 2021; shortly thereafter, it won the People's Choice Award at the 2021 Toronto International Film Festival. The film was released in the United States on 12 November 2021 by Focus Features, and in the United Kingdom and Ireland on 21 January 2022, by Universal Pictures. It received generally positive reviews from critics for Branagh's direction and screenplay, cinematography, and the performances of the cast, and grossed over $49 million worldwide.

The film received seven nominations at the 94th Academy Awards, including Best Picture, winning for Best Original Screenplay. It was named one of the best films of 2021 by the National Board of Review and tied with The Power of the Dog for a leading seven nominations at the 79th Golden Globe Awards, including Best Motion Picture – Drama, and won for Best Screenplay. It also tied with West Side Story for a leading eleven nominations at the 27th Critics' Choice Awards, including Best Picture, and also received six nominations at the 75th British Academy Film Awards, winning Outstanding British Film.