Jean Renoir (French: [ʁənwaʁ]; 15 September 1894 – 12 February 1979) was a French filmmaker, actor, producer and author. His La Grande Illusion (1937) and The Rules of the Game (1939) are often cited by critics as among the greatest films ever made. In 2002, he was ranked fourth on the BFI's Sight & Sound poll of the greatest directors. Among numerous honours accrued during his lifetime, he received a Lifetime Achievement Academy Award in 1975. Renoir was the son of the painter Pierre-Auguste Renoir and the uncle of the cinematographer Claude Renoir. With Claude, he made The River (1951), the first color film shot in India. A lifelong lover of theater, Renoir turned to the stage for The Golden Coach (1952) and French Cancan (1955). He was one of the first filmmakers to be known as an auteur; the critic Penelope Gilliatt said a Renoir shot could be identified "in a thousand miles of film."

Pauline Kael wrote that "At his greatest, Jean Renoir expresses the beauty in our common humanity—the desires and hopes, the absurdities and follies, that we all, to one degree or another, share." Per The New York Times: "The style that ran through Mr. Renoir's films — a mixture of tenderness, irony and Gallic insouciance‐was caught in a famous line from his 1939 masterpiece, The Rules of the Game. It was spoken by Octave, played by the director himself: 'You see, in this world, there is one awful thing, and that is that everyone has his reasons.'”

Renoir was born in the Montmartre district of Paris, France. He was the second son of Aline (née Charigot) Renoir and Pierre-Auguste Renoir, the Impressionist painter. His elder brother was Pierre Renoir, a French stage and film actor, and his younger brother Claude Renoir (1901–1969) had a brief career in the film industry, mostly assisting on a few of Jean's films.^{[citation needed]} Jean Renoir was also the uncle of Claude Renoir (1913–1993), the son of Pierre, a cinematographer who worked with Jean Renoir on several of his films. He recalls that "I discovered Alexandre Dumas when I was about ten. I am still discovering him."

Renoir was largely raised by Gabrielle Renard, his nanny and his mother's cousin, with whom he developed a strong bond. Shortly before his birth, she had come to live with the Renoir family. She introduced the young boy to the Guignol puppet shows in Montmartre, which influenced his later film career. He wrote in his 1974 memoirs My Life and My Films, "She taught me to see the face behind the mask and the fraud behind the flourishes. She taught me to detest the cliché." Gabrielle was also fascinated by the new early motion pictures, and when Renoir was only a few years old she took him to see his first film.

As a child, Renoir moved to the south of France with his family. He and the rest of the Renoir family were the subjects of many of his father's paintings. His father's financial success ensured that the young Renoir was educated at fashionable boarding schools, from which, as he later wrote, he frequently ran away.

At the outbreak of World War I, Renoir was serving in the French cavalry. Later, after receiving a bullet in his leg, he served as a reconnaissance pilot. His leg injury left him with a permanent limp, but allowed him to develop his interest in the cinema, since he recuperated with his leg elevated while watching films, including the works of Charlie Chaplin, D.W. Griffith and others. After the war, Renoir followed his father's suggestion and tried making ceramic art, but he soon set that aside to make films in the attempt, he would later claim, to make his wife, Hessling, a star. He was particularly inspired by Erich von Stroheim's work.

In 1924, Renoir directed Une Vie Sans Joie or Catherine, the first of his nine silent films, most of which starred his first wife, Catherine Hessling, who was also his father's last model. At this stage, his films did not produce a return. Renoir gradually sold paintings inherited from his father to finance them.

During the 1930s Renoir enjoyed great success as a filmmaker. In 1931 he directed his first sound films, On purge bébé (Baby's Laxative) and La Chienne (The Bitch). The following year he made Boudu Saved from Drowning (Boudu sauvé des eaux), a farcical sendup of the pretensions of a middle-class bookseller and his family, who meet with comic, and ultimately disastrous, results when they attempt to reform a vagrant played by Michel Simon. In 1934, he filmed an adaptation of Gustave Flaubert's Madame Bovary (1857). His 1935 film Toni, shot on locations with a nonprofessional cast, was later an influence on the French New Wave.