Synecdoche, New York ( sin-EK-də-kee) is a 2008 American postmodern psychological drama film written and directed by Charlie Kaufman in his directorial debut. It stars Philip Seymour Hoffman as an ailing theater director who works on an increasingly elaborate stage production and whose extreme commitment to realism begins to blur the boundaries between fiction and reality. The film's title is a play on Schenectady, New York, where much of the film is set, and the concept of synecdoche, wherein a part of something represents the whole or vice versa.

The film premiered in competition at the 61st Annual Cannes Film Festival on May 23, 2008. Sony Pictures Classics acquired the United States distribution rights, paying no money but agreeing to give the film's backers a portion of the revenues. It had a limited theatrical release in the U.S. on October 24, 2008, and was a commercial failure on its initial release.

The story and themes of Synecdoche, New York polarized critics: some called it pretentious or self-indulgent, but others declared it a masterpiece, with Roger Ebert ranking it as the decade's best. The film was also nominated for the Palme d'Or at the 2008 Cannes Film Festival, and has since appeared in multiple polls of the greatest films of the 21st century.