French actor who was a protégé and longtime partner of French writer-director Jean Cocteau (Cocteau, Jean). Marais was one of the most popular leading men in French films during the 1940s and '50s.

Marais was first attracted to the stage in high school but was turned down by the Paris Conservatory. After working as a photographer's apprentice, he began playing bit parts and walk-ons in film and on stage, making his motion-picture debut in 1933. Despite his handsome features and muscular physique, Marais's thin voice and limited acting ability restricted the type and size of roles he played.

After meeting Jean Cocteau (1937), however, his career took an upward turn. Marais became Cocteau's male lead and made a notable appearance as an archetypal romantic hero, Tristan, in Cocteau's L'Eternel retour (1943; The Eternal Return). He worked for Cocteau almost exclusively until, eventually, his maturity, experience, and acting ability led other directors to seek him out for lead roles.

Among the more than 70 films he appeared in are La Belle et la bête (1946; Beauty and the Beast), L'Aigle à deux têtes (1948; Eagle with Two Heads), Les Parents terribles (1948; The Storm Within), Le Secret de Mayerling (1949; The Secret of Mayerling), Orphée (1950; Orpheus), and Éléna et les hommes (1956; Paris Does Strange Things). In the '60s he had success portraying a super-criminal named Fantômas—in the films Fantômas (1964), Fantômas se déchaîne (1965; Fantomas Strikes Back), and Fantômas contre Scotland Yard (1966; Fantomas Against Scotland Yard). After a 15-year hiatus Marais began appearing in films again in the mid-1990s; his most notable mature performance was in Bernardo Bertolucci's (Bertolucci, Bernardo) Stealing Beauty (1996).