Henning von Holtzendorff

Henning von Holtzendorff
Admiral von Holtzendorff in 1918
Birth nameHenning Rudolf Adolf Karl
von Holtzendorff
Born(1853-01-09)9 January 1853
Died7 June 1919(1919-06-07) (aged 66)
Allegiance Prussia
North German Confederation
German Empire
Branch North German Federal Navy
 Imperial German Navy
Service years1869–1913
1915–1918
RankGroßadmiral
UnitWest Africa Squadron
East Asia Squadron
Baltic Sea Naval Station
CommandsImperial Shipyard Danzig
I Battle Squadron
High Seas Fleet
Imperial Admiralty Staff
ConflictsFranco-Prussian War
Boxer Rebellion
World War I
AwardsOrder of the Black Eagle
Pour le Mérite with oak leaves
Other workMember of the House of Lords

Henning Rudolf Adolf Karl von Holtzendorff (9 January 1853 – 7 June 1919) was a German admiral during World War I, who became famous for his December 1916 memo about unrestricted submarine warfare against the United Kingdom. He was a recipient of Order of the Black Eagle and the Pour le Mérite with oak leaves and was one of just six Grand Admirals of the Imperial German Navy.