Catherine Frot (born 1 May 1956) is a French actress. A ten-time César Award nominee, she won the awards for Best Actress for Marguerite (2015) and Best Supporting Actress for Family Resemblances (1996). Her other films include Le Dîner de Cons (1998), La Dilettante (1999), and Haute Cuisine (2012).

Frot was born in Paris, France, the daughter of an engineer and a mathematics teacher. Her younger sister, Dominique, is also an actress. Catherine demonstrated comic talent at an early age, and enrolled in the Versailles conservatory when she was fourteen and still at school. In 1974, she began her education at the Rue Blanche school and afterwards took up full-time studies at the conservatory.