The siege of Danzig (16 January 1813 – 2 January 1814) was a siege of the city of Danzig during the War of the Sixth Coalition by Russian and Prussian forces[1] against Jean Rapp's permanent French garrison, which had been augmented by soldiers from the Grande Armée retreating from its Russian campaign.

[2] The garrison included two crack divisions under Étienne Heudelet de Bierre and Charles Louis Dieudonné Grandjean plus whole units and stragglers that had lost contact with their units, all with their health and morale both weakened and most of their equipment lost and carrying their wounded.

The siege was begun by cossacks under hetman Matvei Platov, then was continued mainly by infantry, mainly militiamen and irregulars.

[3][4] The Treaty of Tilsit of 1807 had made Danzig a Free City nominally under Prussian control.

He was also attempting to re-group an army in his rear in order to confront the Coalition, and so needed to guard the line of the Vistula by garrisoning Danzig, Thorn and Warsaw.