Desplechin was born in Roubaix.[1] He is the son of Robert and Mado Desplechin, and grew up in the Nord department. He has a brother named Fabrice who has acted in several of his films, and two sisters: novelist Marie Desplechin and screenwriter Raphaëlle Desplechin.
Arnaud Desplechin studied film directing at the University of Paris III: Sorbonne Nouvelle then at the IDHEC, graduating in 1984. He made three short films inspired by the work of the Belgian novelist Jean Ray. During the late 1980s, Desplechin worked as a director of photography on several films.
In 2000, Desplechin made his first English-language film, Esther Kahn, adapted from a short story by Arthur Symons, and starred Summer Phoenix in the title role. The film was seen as a homage to François Truffaut's work because it deals with coming of age (a favorite Truffaut theme) and uses the New Wave cinema techniques that Truffaut pioneered.
Three years later, Desplechin made two films adapting Edward Bond's play Playing 'In the Company of Men': one showing 70% rehearsal footage and 30% of the film itself; and the other with inverse proportions. The next year, he directed Kings and Queen, which mixed comedy and tragedy to tell the story of two ex-lovers played by Amalric and Devos. The film also starred Catherine Deneuve in the role of a psychiatrist. Kings and Queen was nominated for several awards and Amalric won the César Award for Best Actor. However, controversy arose when actress Marianne Denicourt, Desplechin's ex-girlfriend, accused him of revealing elements of her private life in the screenplay of Kings and Queen. In 2005, she published Mauvais génie ("Evil Genius"), describing her relationship with an unscrupulous film director called "Arnold Duplancher." In 2006, she unsuccessfully sued Desplechin.[3]
In 2007, Desplechin filmed L'Aimée, a documentary showing his father, his brother, and his nephews in the family house in Roubaix just before it was to be sold. That same year, he filmed the family drama A Christmas Tale, starring Deneuve, Amalric, Devos, and Mastroianni. This film was screened in competition at Cannes in 2008.