Pierre Niney (born 13 March 1989) is a French actor. He made his acting debut in the two-part miniseries La dame d'Izieu in 2007, followed by films such as LOL (Lots of Lough) (2008), The Army of Crime (2009), Romantics Anonymous (2010), and Just Like Brothers (2012). In 2014, Niney starred as fashion designer Yves Saint Laurent in a biopic, for which he won a César Award for Best Actor. He also co-created, co-wrote and starred in Netflix's Fiasco (2024), and was Edmond Dantès in The Count of Monte Cristo (2024).

Niney was born in Boulogne-Billancourt, Hauts-de-Seine, France. His family is of Sephardic Jewish (Turkish-Jewish) and Catholic background. His father, François Niney, is a film professor at Normale Sup, La Fémis and Sciences Po. His mother was born in Belgium and is an author of creative leisure manuals.