The Duke of Swabia was a noble title in the Holy Roman Empire, associated with the region of Swabia in present-day Germany. The title emerged in the 10th century and was held by various noble families, most notably the Hohenstaufen dynasty. The dukes played a significant role in the political landscape of medieval Europe, often engaging in conflicts with other regional powers. The title of Duke of Swabia became less prominent by the late Middle Ages as the political structure of the Holy Roman Empire evolved. Eventually, the title was absorbed into the broader framework of the empire, and the region became part of various territorial states.