Hugo Karl Gottlieb von Kathen (27 August 1855 – 2 April 1932) was a German infantry general during World War I.

Kathen was born in Freienwalde, Farther Pomerania to the Prussian Major Karl von Kathen (1803–1876) (a landowner from Langenhaken in Pomerania), and Agnes née Schumann (1825–1895). His family came originally from Stralsund, and they became Swedish nobility in 1692.

Kathen married Susanne von Dechend (1859–1929), daughter of Reichsbank president Hermann von Dechend (1814–1890), on 27 September 1884 in Berlin.

Kathen died in Wiesbaden, Hesse.

• 2 August - 18 December 1914: military governor of Mainz
• 19 December 1914 - 30 July 1918: commanding general of the XXIII Reserve Corps
• 31 July - 11 November 1918: commander-in-chief of the 8th army
• until February 1919: commander of the German troops in Lithuania and Estonia
• starting from February 1919: commander of the German troops in Latvia

• Pour le Mérite on 28 August 1916; with oak leaves on 27 August 1917

• Genealogisches Handbuch des Adels, Adelige Häuser B Band VII, Seite 180, Band 36 der Gesamtreihe, C. A. Starke Verlag, Limburg (Lahn) 1965, ISSN 0435-2408.