Pierrette Henriette Denise Marthe Pernot (20 December 1922 – 25 July 2016), better known professionally as Catherine Arley, was a French novelist and actress. After high school, Catherine Arley joined the National Conservatory of Dramatic Arts of Paris.

She played in street theatre and in some films, taking part in the French production of Fleuve étincelant (The Flashing Stream) by Charles Langbridge Morgan. She gave up her acting career after her marriage and at the same time as her first novel, Tu vas mourir, appeared in the 1953 Éditions Denoël collection "Oscar" edited by Marcel Duhamel. Despite this encouraging welcome, her second novel, La Femme de paille, a story of fraudulent adoption, was rejected by every French publisher to whom she offered it.