阿德瑙（德语：Adenau）是德国莱茵兰-普法尔茨州的一座城市，面积18.56平方公里，人口2,904人（2006年）。

Adenau (  ) is a town in the High Eifel in Germany. It is known as the Johanniterstadt because the Order of Saint John was based there in the Middle Ages. The town's coat of arms combines the black cross of the Electorate of Cologne with the lion of the lords of Nürburg. The northern loop of the Nürburgring lies just outside the town.