Prabuty [praˈbutɨ] (German: Riesenburg) is a town in Kwidzyn County within the Pomeranian Voivodeship of northern Poland.

In 1236, the Teutonic Knights under Henry III, Margrave of Meissen, destroyed an Old Prussian fortress between the lakes Dzierzgoń and Liwieniec.

[1] The village grew around the castle and received Culm law city rights on 30 October 1330[2] from bishop Rudolf of Pomerania (1322–1332).

[2] In 1451, the town council eventually joined the Prussian Confederation, but bishop Kaspar Linke expelled the councilors and confiscated their property.

[4] After the war and the Second Peace of Thorn (1466), the town became a part of Poland as a fief,[9] and Pomesanian bishops retained their rule over the area.

[4] In October 1831, several Polish cavalry and infantry units and honor guards of the November Uprising stopped in the town on the way to their internment places.

After World War I, a referendum was held concerning the future nationality of the town, which remained part of Weimar Germany.

Most of the German inhabitants were expelled in accordance with the Potsdam Agreement and the pre-war Polish population was joined by Poles displaced from former eastern Poland annexed by the Soviet Union.