XXY is a 2007 Argentine drama film written and directed by Lucía Puenzo and starring Ricardo Darín, Valeria Bertuccelli, Inés Efron and Martín Piroyansky. Based on the short story Cinismo (Cynicism), included in the book Chicos (Boys) by author Sergio Bizzio, the film tells the story of a 15-year-old intersex person, the way her family copes with her condition and the ultimate decision that she must eventually make as she struggles to define her own gender identity within a society that expects certain behaviors from every individual.

XXY received positive reviews from critics, winning the Critics' Week grand prize at the 2007 Cannes film festival, as well as the ACID/CCAS Support Award. It was nominated for eight awards at the 2008 Argentine Film Critics Association Awards, winning three of them including Best Film, and was nominated or won awards at a number of other foreign film festivals. It was chosen to close the 2008 Melbourne Queer Film Festival and had a short run theatrical release before being released onto DVD. The film also won the Goya Award for Best Spanish Language Foreign Film and the Golden Crow Pheasant at the International Film Festival of Kerala.

The film's title appears to be a reference to Klinefelter syndrome (also known as 47XXY), a condition in which a person is born with an extra chromosome. Males affected with Klinefelter syndrome may not show obviously irrefutable symptoms of being chromosomally intersex and are often unaware of their condition unless diagnosed later in life (usually due to infertility). It can be ascertained throughout the film that the main character has typical female sexual characteristics, with the exception of an enlarged clitoris, although this is coupled with an apparent hormonal regimentation. This is inconsistent with the condition of 47XXY, since those who have it usually appear to be anatomically male, though with certain feminine secondary sex characteristics such as gynecomastia.