Pierre Niney is a French actor. He made his acting debut in the two-part television miniseries La dame d'Izieu in 2007, followed by films such as LOL (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 the biopic of the same name, for which he won a César Award for Best Actor.

Yves Henri Donat Mathieu-Saint-Laurent, referred to as Yves Saint Laurent or YSL, was a French fashion designer who, in 1962, founded his eponymous fashion label. He is regarded as being among the foremost fashion designers of the twentieth century. In 1985, Caroline Milbank wrote, "The most consistently celebrated and influential designer of the past twenty-five years, Yves Saint Laurent can be credited with both spurring the couture's rise from its 1960s ashes and with finally rendering ready-to-wear reputable."