High Command of Coastal Defence

High Command of Coastal Defence Küstenverteidigung
Flag of the Staff of an Armee Oberkommando (1871–1918)
Active	15 April 1916 – 1 November 1918
Country	German Empire
Type	Army
Engagements	World War I

High Command of Coastal Defence (German: Küstenverteidigung) was an army level command of the German Army in World War I. It served in Germany throughout its existence.

The High Command of Coastal Defence was set up on 14 April 1916, with Headquarters in Hamburg, to guard against the possibility of an attack on the German coast (North Sea or Baltic Sea) or mainland Denmark. Its task was to maintain the coastal defences in a state of combat readiness, and to assemble a defensive army if needed. To this end, it took command of all Deputy Corps Commanders bordering the sea (I Corps District, II Corps District, IX Corps District, X Corps District) and XVII Corps District. From September 1916, it also commanded those bordering the Netherlands (VII Corps District and VIII Corps District).

On 18 September 1918, the post of Supreme Commander was discontinued; on 1 November 1918, the High Command was taken off active status and was dissolved on 24 January 1919.

High Command of Coastal Defence had the following commanders during its existence: