The Zaporozhian Cossacks, Zaporozhian Cossacks Army, Zaporozhian Army\, or simply Zaporozhians are Cossacks who live beyond the rapids of the Dnieper River, the land also known under the historical term Wild Fields in today's Central Ukraine.

Today much of its territory is flooded by the waters of Kakhovka Reservoir.The Zaporizhian Sich grows rapidly in the fifteenth century from serfs fleeing the more controlled parts of the Polish–Lithuanian Commonwealth.

It becomes established as a well-respected political entity with a parliamentary system of government.

During the course of the sixteenth, seventeenth and well into the eighteenth century, the Zaporozhian Cossacks become a strong political and military force that challenges the authority of the Polish–Lithuanian Commonwealth, the Tsardom of Russia, and the Crimean Khanate.The Host goes through a series of conflicts and alliances involving the three powers, including supporting an uprising in the eighteenth century.

Their leader signs a treaty with the Russians.

This group is forcibly disbanded in the late eighteenth century by the Russian Empire, with most of the population relocated to the Kuban region in the South edge of the Russian Empire.

The Cossacks serve a valuable role of conquering the Caucasian tribes and in return enjoy considerable freedom granted by the Tsars.The name Zaporozhtsi comes from the location of their fortress, the Sich, in Zaporozhzhia, the ‘land beyond the rapids’ (from Ukrainian za ‘beyond’ and poróhy ‘river rapids’).