Madeline's Madeline is a 2018 American drama film written and directed by Josephine Decker. It stars Helena Howard in her first film role, alongside Molly Parker and Miranda July. The film follows a teenage actress who is encouraged by her theater director to blur the lines between the character she is playing and her actual identity. The film is known for its experimental visuals and the improvisational process Decker used to create the story, not unlike the characters themselves.

The film had its world premiere at the Sundance Film Festival on January 22, 2018. It was released on August 10, 2018, by Oscilloscope Laboratories. The film received critical acclaim, particularly for Howard's performance, which was hailed by IndieWire as one of the 50 best performances of the 2010s decade.