Stacy Martin (born 1 January 1991) is a French-English actress. She is best known for her breakthrough role as the younger version of Charlotte Gainsbourg's character Joe in Lars von Trier's drama film Nymphomaniac.
Martin was born on 1 January 1991, and spent her early childhood in Paris. She moved to Japan when she was seven, where she lived with her French father, René, a hairstylist, and her English mother, Annette, until she was thirteen. She then returned to France. After finishing school, she moved to London to follow her dream of becoming an actress and took up modeling to fund her living. She took up Media and Cultural Studies at the London College of Communication. She also used the money she earned to pay for private acting classes and also studied the Meisner technique of acting at the Actors’ Temple.
In 2013, Martin starred as Young Joe aged 15 to 31, in Lars von Trier's drama film Nymphomaniac. For her role in the film, which had real sex scenes and featured hardcore porn in some cases, Martin had a "porn double" and used a prosthetic vagina. The role got her nominated for a Bodil Award for Best Actress in a Leading Role. She was also a part of the Breakthrough Brits of 2014 which was organized by BAFTA to recognize emerging talents. She played Faye in Ben Wheatley's 2015 film High-Rise, and Young Dora in Matteo Garrone's Tale of Tales, also in 2015.