Karl Georg Albrecht Ernst von Hake (8 August 1768 – 19 May 1835) was a Prussian general and Minister of War.

In 1793, while serving in the French Revolutionary Wars under the command of Charles William Ferdinand, Duke of Brunswick, he distinguished himself in the Battle of Pirmasens against France.

[citation needed] Subsequently he, by now a Generalmajor, served as Prussian envoy at the headquarters of the Allied Armies.

[3] King Frederick William III of Prussia ordered him to conduct experiments into the use of the optical telegraph.

Hake finally left the War Ministry in 1833 and died two years later, in 1835, at Castellammare di Stabia near Naples in the Kingdom of the Two Sicilies.