Eternal Sunshine of the Spotless Mind is a 2004 American surrealist science fiction romantic drama film directed by Michel Gondry and written by Charlie Kaufman from a story by Gondry, Kaufman, and Pierre Bismuth. Starring Jim Carrey and Kate Winslet, with supporting roles from Kirsten Dunst, Mark Ruffalo, Elijah Wood and Tom Wilkinson, the film follows two individuals who undergo a memory erasure procedure to forget each other after the dissolution of their romantic relationship. The title of the film is a quotation from the 1717 poem Eloisa to Abelard by Alexander Pope. It uses elements of psychological drama and science fiction and a nonlinear narrative to explore the nature of memory and love.

Eternal Sunshine of the Spotless Mind opened in theaters in the United States on March 19, 2004, to widespread acclaim from critics and audiences, who praised the visual style, editing, writing, score, themes, direction and performances, especially of Carrey and Winslet. The film was a box office success, grossing $74 million on a $20 million budget, and was named by the American Film Institute one of the Top 10 Films of 2004. At the 77th Academy Awards, Bismuth, Gondry and Kaufman won the Academy Award for Best Original Screenplay, and Winslet received a nomination for the Academy Award for Best Actress.

The film has been named by several publications as one of the best of the 21st century. It was the inspiration behind several music projects, such as Jay Electronica's 2007 piece "Eternal Sunshine (The Pledge)", Jhené Aiko's 2014 tracks "Spotless Mind" and "Eternal Sunshine", Bastille's 2022 single "Remind Me" and Ariana Grande's 2024 album Eternal Sunshine.