The Deluge () is a historical novel by the Polish author Henryk Sienkiewicz, published in 1886. It is the second volume of a three-volume series known to Poles as "The Trilogy," having been preceded by "With Fire and Sword" ("Ogniem i mieczem", 1884) and followed by "Fire in the Steppe" ("Pan Wołodyjowski", 1888). The novel tells a story of a fictional Polish–Lithuanian Commonwealth soldier and noble Andrzej Kmicic and shows a panorama of the Commonwealth during its historical period of the Deluge, which was a part of the Northern Wars.