"The Metamorphosis" (German: "Die Verwandlung", also sometimes translated as "The Transformation") is a novella by Franz Kafka, first published in 1915. It has been cited as one of the seminal works of fiction of the 20th century and is studied in colleges and universities across the Western world. The story begins with a traveling salesman, Gregor Samsa, waking to find himself transformed (metamorphosed) into a large, monstrous insect-like creature. The cause of Samsa's transformation is never revealed, and Kafka never did give an explanation. The rest of Kafka's novella deals with Gregor's attempts to adjust to his new condition as he deals with being burdensome to his parents and sister, who are repulsed by the horrible, verminous creature Gregor has become.

Franz Kafka (3 July 1883 – 3 June 1924) was a German-speaking Bohemian Jewish novelist and short story writer, widely regarded as one of the major figures of 20th-century literature. His work, which fuses elements of realism and the fantastic, typically features isolated protagonists faced by bizarre or surrealistic predicaments and incomprehensible social-bureaucratic powers, and has been interpreted as exploring themes of alienation, existential anxiety, guilt, and absurdity. His best known works include "Die Verwandlung" ("The Metamorphosis"), "Der Process" ("The Trial"), and "Das Schloss" ("The Castle"). The term "Kafkaesque" has entered the English language to describe situations like those in his writing.