Vianden () is a commune with city status in the Oesling, north-eastern Luxembourg, with over 1,800 inhabitants. It is the capital of the canton of Vianden, which is part of the district of Diekirch. Vianden lies on the Our river, near the border between Luxembourg and Germany. , the town of Vianden, which lies in the east of the commune, has a population of 1,811. It is known for its impressive castle and beautiful location in the Our valley.