An Cailín Ciúin is a 2022 Irish coming-of-age drama film written and directed by Colm Bairéad, in his feature film debut. Based on the 2010 short story “Foster” by Claire Keegan, it stars Catherine Clinch, Carrie Crowley and Andrew Bennett.

Set in 1981, the film follows a withdrawn nine-year-old girl raised by neglectful parents among many other siblings, who experiences a loving home for the first time when she spends the summer on a farm in Rinn Gaeltacht, County Waterford, alone with a married couple who are distant relatives. It is mostly in the Irish language, although it also contains parts in English.

The Quiet Girl premiered on 11 February 2022 at the 72nd Berlin International Film Festival, where it won two awards, before being theatrically released in Ireland on 12 May 2022. It received critical acclaim for its emotional weight, story, and performances. It received four nominations at the 18th Irish Film & Television Awards, winning Best Film, Best Director, and Best Actress for the then 11-year old Clinch. It was later elected as Ireland’s submission for Best International Feature Film at the 95th Academy Awards, and became the first Irish film in history to achieve the nomination; it also received BAFTA Award nominations for Best Film Not in the English Language and Best Adapted Screenplay.