Abbas Kiarostami (Persian: عباس کیارستمی [ʔæbˌbɒːs kijɒːɾostæˈmi] ^ⓘ; 22 June 1940 – 4 July 2016) was an Iranian film director, screenwriter, poet, photographer, and film producer. An active filmmaker from 1970, Kiarostami had been involved in the production of over forty films, including shorts and documentaries. Kiarostami attained critical acclaim for directing the Koker trilogy (1987–1994), Close-Up (1990), The Wind Will Carry Us (1999), and Taste of Cherry (1997), which was awarded the Palme d'Or at the Cannes Film Festival that year. In later works, Certified Copy (2010) and Like Someone in Love (2012), he filmed for the first time outside Iran: in Italy and Japan, respectively. His films Where Is the Friend's House? (1987), Close-Up, and The Wind Will Carry Us were ranked among the 100 best foreign films in a 2018 critics' poll by BBC Culture. Close-Up was also ranked one of the 50 greatest movies of all time in the famous decennial Sight & Sound poll conducted in 2012.

Kiarostami had worked extensively as a screenwriter, film editor, art director, and producer and had designed credit titles and publicity material. He was also a poet, photographer, painter, illustrator, and graphic designer. He was part of a generation of filmmakers in the Iranian New Wave, a Persian cinema movement that started in the late 1960s and emphasized the use of poetic dialogue and allegorical storytelling dealing with political and philosophical issues.

Kiarostami had a reputation for using child protagonists, for documentary-style narrative films, for stories that take place in rural villages, and for conversations that unfold inside cars, using stationary mounted cameras. He is also known for his use of Persian poetry in the dialogue, titles, and themes of his films. Kiarostami's films contain a notable degree of ambiguity, an unusual mixture of simplicity and complexity, and often a mix of fictional and documentary elements. The concepts of change and continuity, in addition to the themes of life and death, play a major role in Kiarostami's works.

Kiarostami was born in Tehran to a Persian family. His first artistic experience was painting, which he continued into his late teens, winning a painting competition at the age of 18 shortly before he left home to study at the University of Tehran School of Fine Arts. He majored in painting and graphic design and supported his studies by working as a traffic policeman.

As a painter, designer, and illustrator, Kiarostami worked in advertising in the 1960s, designing posters and creating commercials. Between 1962 and 1966, he shot around 150 advertisements for Iranian television. In the late 1960s, he began creating credit titles for films (including Gheysar by Masoud Kimiai) and illustrating children's books.

In 1970 when the Iranian New Wave began with Dariush Mehrjui's film Gāv, Kiarostami helped set up a filmmaking department at the Institute for Intellectual Development of Children and Young Adults (Kanun) in Tehran. Its debut production, and Kiarostami's first film, was the twelve-minute The Bread and Alley (1970), a neo-realistic short film about a schoolboy's confrontation with an aggressive dog. Breaktime followed in 1972. The department became one of Iran's most noted film studios, producing not only Kiarostami's films but acclaimed Persian films such as The Runner and Bashu, the Little Stranger.

In the 1970s, Kiarostami pursued an individualistic style of film making. When discussing his first film, he stated:

Bread and Alley was my first experience in cinema and I must say a very difficult one. I had to work with a very young child, a dog, and an unprofessional crew except for the cinematographer, who was nagging and complaining all the time. Well, the cinematographer, in a sense, was right because I did not follow the conventions of film making that he had become accustomed to.