Catherine Spaak (3 April 1945 - 17 April 2022) is a French-Italian actress and singer.

Spaak spent most of her career in Italy, where she became a teenage star. From age 15 to 18, Spaak was the lead actress in at least 12 movies. As an adult, she appeared in many comedies and a few dramas from the mid-1960s through the early 1980s. Most of them were for the Italian film industry, with some Hollywood or international productions. Among her most notable titles are Circle of Love (1964, directed by Roger Vadim), The Man, the Woman and the Money (1965, starring Marcello Mastroianni), The Incredible Army of Brancaleone (1966, written by Age & Scarpelli), Adultery Italian Style (1966), Hotel (1967), the sex comedy The Libertine (1969), Diary of a Telephone Operator (1969, with Claudia Cardinale), the drama The Cat o' Nine Tails (1971, written and directed by Dario Argento), the nunsploitation film Story of a Cloistered Nun (1973), the controversial My Darling Slave (1973), the western Take a Hard Ride (1975), Sunday Lovers (1980), and Miele di donna (1981).