The Duke of Merania was a noble title in the historical region of Merania, which is located in present-day Croatia and Slovenia. This title was held by various members of the House of Andechs during the Middle Ages, particularly in the 12th and 13th centuries. The dukedom played a significant role in the political landscape of Central Europe, often involving alliances and conflicts with neighboring territories. The title of Duke of Merania was associated with the control of important trade routes and strategic locations. The dukes were influential in the development of local governance and the spread of Christianity in the region. Over time, the title became less prominent, eventually fading from use as political structures evolved in the area.