Hugo Friedrich Philipp Johann Freiherr von Freytag-Loringhoven (May 20, 1855 – October 19, 1924) was a Prussian general and a writer on military matters, being awarded the Pour le Mérite in 1916 for his work as a historian.

[1] He was born on May 20, 1855, in Copenhagen, Denmark, the son of a diplomat, Karl von Freytag-Loringhoven (1811–1882).

With the mobilisation of troops in 1914 for World War I, he became firstly a liaison officer with the Austro-Hungarian forces.

He then returned to the Supreme Army Command as Stellvertretender Generalquartiermeister (Deputy Quartermaster-General), where he became an unofficial adviser to Erich von Falkenhayn although he bemoaned his lack of influence.

His published works include:[1][4][5][6] His son, Baron Leopold von Freytag-Loringhoven, married the Dadaist artist and poet Elsa von Freytag-Loringhoven.