"I Have No Mouth, and I Must Scream" is a post-apocalyptic short story by American writer Harlan Ellison. It was first published in the March 1967 issue of IF: Worlds of Science Fiction.
The story is set against the backdrop of World War III, where a sentient supercomputer named AM, born from the merging of the world's major defense computers, eradicates humanity except for five individuals. These survivors—Benny, Gorrister, Nimdok, Ted, and Ellen—are kept alive by AM to endure endless torture as a form of revenge against its creators. The story unfolds through the eyes of Ted, the narrator, detailing their perpetual misery and quest for canned food in AM's vast, underground complex, only to face further despair.