Adenau
Town
1630 Fachwerk house in marketplace
Flag Coat of arms
Location of Adenau within Ahrweiler district
Adenau Show map of Germany Adenau Show map of Rhineland-Palatinate
Coordinates: 50°23′N 6°56′E / 50.383°N 6.933°E / 50.383; 6.933
Country	Germany
State	Rhineland-Palatinate
District	Ahrweiler
Municipal assoc.	Adenau
Government
• Stadtbürgermeister (2019–24)	Arnold Hoffmann[1] (CDU)
Area
• Total	18.56 km2 (7.17 sq mi)
Elevation	300 m (1,000 ft)
Population  (2022-12-31)[2]
• Total	2,956
• Density	160/km2 (410/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	53511–53518
Dialling codes	02691
Vehicle registration	AW
Website	www.stadt-adenau.de

Adenau is a town in Rhineland-Palatinate, Germany. It is located within High Eifel. The population in 2020 was about 3,000. There is a volcano east of the town. A rock festival Rock am Ring is held each year. In the Middle Ages, Order of Saint John was located in the town. This was a German Protestant group of knights. The town is also called Johanniterstadt.