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 and followed by Fire in the Steppe. The novel tells a story of a fictional Polish soldier and noble Andrzej Kmicic and shows a panorama of Polish-Lithuanian Commonwealth during the historical Deluge which was a part of the Northern Wars.