The country listed as the place of origin for the jelly doughnut is Germany.
This listing reflects the strong association between jelly doughnuts and the German Berliner, also called a Krapfen. A Berliner is a round, yeast-raised doughnut without a central hole, fried and filled with jam or another sweet filling. It is especially associated with Germany and Central Europe.
The pastry’s documented history reaches back to a German cookbook published in 1485, which included a recipe for Gefüllte Krapfen, a fried, filled dough pastry. That record does not prove the exact moment of invention, but it provides an early written reference and explains why Germany is commonly given as the origin in reference summaries.
The country-of-origin label should not be confused with the many later national variations. Poland has pączki, Israel has sufganiyot, and Italy has bomboloni, while Portugal has bolas de Berlim. These are related pastries, but the standard origin listing for the jelly doughnut is Germany.