Isabelle Anne Madeleine Huppert (born 16 March 1953) is a French actress. Described as "one of the best actresses in the world", she is known for her portrayals of cold and disdainful characters devoid of morality. Nominated for a record sixteen César Awards, she has won two. Among other accolades, she has received six Lumières Award nominations, more than any other person, and won four. In 2020, The New York Times ranked her second on its list of the greatest actors of the 21st century.

Huppert's first César nomination was for the 1975 film Aloïse. In 1978, she won the BAFTA Award for Most Promising Newcomer for The Lacemaker. She went on to win two Best Actress awards at the Cannes Film Festival, for Violette Nozière (1978) and The Piano Teacher (2001), as well as two Volpi Cups for Best Actress at the Venice Film Festival, for Story of Women (1988) and La Cérémonie. Her other films in France include Loulou (1980), La Séparation (1994), 8 Women (2002), Gabrielle (2005), Amour (2012), and Things to Come (2016). Among international film's most prolific actresses, Huppert has worked in Italy, Russia, Central Europe, and in Asia. Her English-language films include: Heaven's Gate (1980), The Bedroom Window (1987), I Heart Huckabees (2004), The Disappearance of Eleanor Rigby (2013), Louder Than Bombs (2015), Greta (2018), and Frankie (2019).