Duchy of Pomerania-Barth was a feudal duchy of the Holy Roman Empire located in Western Pomerania that existed in the Middle Ages between 1376 and 1478, and between 1569 and 1625. The state consisted of its capital, Barth, and nearby areas. Duchy had separated from Pomerania-Wolgast in 1376 and was incorporated into Duchy of Pomerania in 1478. It was reestablished in 1569 by separation from Pomerania-Wolgast-Stolp and existed until 1625, when it was incorporated into Duchy of Pomerania.