Based on a True Story (French: D'après une histoire vraie) is a 2017 French-language psychological thriller film directed by Roman Polanski.

The screenplay was written by Polanski and Olivier Assayas, adapted from the novel of the same name by Delphine de Vigan.

The film focuses on writer Delphine (Seigner), who has achieved her first career success, publishing a debut novel dedicated to her mother.

Sony Pictures Classics announced they would partner with RatPac Entertainment for the US theatrical release.

However, after the MeToo movement gained global prominence that fall, Sony Pictures Classics was reported to have shelved the film, with no plans to release it in the United States.