French motion-picture actor who achieved a wide range of characterizations with great economy.

Trintignant initially studied law but began acting on the stage in 1951. His first film appearance was in Si tous les gars du monde (1955; If All the Guys in the World), and he achieved critical recognition as Brigitte Bardot (Bardot, Brigitte)'s deceived husband in Et Dieu créa la femme (1956; And God Created Woman). His sensitive performance as the widowed race-car driver in Claude Lelouch's Un Homme et une femme (1966; A Man and a Woman) brought him international fame.

With his taut acting style and cryptic countenance, Trintignant could subtly convey the psychic conflicts of repressed or introverted male characters. The best known of his many portrayals of innocent or insecure leading men was in Eric Rohmer (Rohmer, Eric)'s Ma nuit chez Maud (1969; My Night at Maud's), while his portrayals of neurotic or depraved characters culminated in Bernardo Bertolucci (Bertolucci, Bernardo)'s Il conformista (1970; The Conformist). He appeared in several crime dramas and psychological thrillers as well as in films involving politics, the best known of which is Costa-Gavras' Z (1968). Among his other better-known films were Les Biches (1968; The Does), L'Attentat (1972; The French Conspiracy), and Un Homme est morte (1973; The Outside Man). He also appeared in several films directed by his second wife, Nadine Trintignant, including L'Eté prochain (1985; Next Summer) and the television movie L'Insoumise (1998; “The Unsubdued”). At the beginning of the 21st century, Trintignant starred in Janis et John (2003; Janis and John) and Immortel (2004; Immortal).