Genre ( /ˈʒɒnrə/ or /ˈdʒɒnrə/; from French, genre French pronunciation: [ʒɑ̃ʁ], "kind" or "sort", from Latin: genus (stem gener-), Greek: genos, γένος) is the term for any category of literature or other forms of art or entertainment, e.g. music, whether written or spoken, audial or visual, based on some set of stylistic criteria. Genres are formed by conventions that change over time as new genres are invented and the use of old ones are discontinued. Often, works fit into multiple genres by way of borrowing and recombining these conventions.

The concept of genre originated from the classification systems created by Aristotle and Plato. Plato divided literature into the three classic genres accepted in Ancient Greece: poetry, drama, and prose. Poetry is further subdivided into epic, lyric, and drama. The divisions are recognized as being set by Aristotle and Plato; however, they were not alone. Many genre theorists contributed to these universally accepted forms of poetry. Similarly many theorists continued to philosophize about genre and its uses, which caused genre as Plato and Aristotle knew it to evolve and further expand.