The Thief's Journal (Journal du voleur, published in 1949) is a novel by Jean Genet. It is a part-fact, part-fiction autobiography that charts the author's progress through Europe in a depoliticized 1930s, wearing nothing but rags and enduring hunger, contempt, fatigue and vice. The main character encounters bars, dives, flophouses, robbery, prison and expulsion in Spain, Italy, Austria, Czechoslovakia, Poland, Nazi Germany and Belgium.

The novel is structured around a series of homosexual love affairs and male prostitution between the author/anti-hero and various criminals, con artists, pimps, and a detective.