The Duke of Stettin was a title held by the rulers of the Duchy of Stettin, a historical region located in present-day Poland. This duchy was part of the larger territory of Pomerania and was established in the 12th century. The title was associated with the House of Griffins, a noble family that played a significant role in the region's history. The duchy was often contested by various powers, including the Kingdom of Poland and the Holy Roman Empire. In the 17th century, the title became less significant as Stettin was integrated into the Duchy of Pomerania, which later became part of the Kingdom of Prussia.