Eugen
Eugen is a masculine given name which may refer to:
- Archduke Eugen of Austria, last Habsburg Grandmaster of the Teutonic Order from 1894 to 1923
- Prince Eugen, Duke of Närke, Swedish painter, art collector, and patron of artists
- Prince Eugen of Schaumburg-Lippe
- Prince Eugen of Bavaria
- Eugen Aburel, Romanian surgeon and obstetrician
- Eugen Bacon, female African-Australian author
- Eugen Beza, Romanian football manager and former player
- Eugen Bleuler, Swiss psychiatrist and eugenicist
- Eugen von Böhm-Bawerk, Austrian economist
- Eugen Bolz, German politician and member of the anti-Nazi resistance
- Eugen Chirnoagă, Romanian chemist
- Eugen Cicero, Romanian-German jazz pianist
- Eugen Ciucă, Romanian-American artist
- Eugen Constant, Romanian writer and trade unionist
- Eugen d'Albert, Scottish-born pianist and composer
- Eugen Doga, Romanian composer from Moldova
- Eugen Drewermann, German church critic, theologian, peace activist, and former Catholic priest
- Eugen Dühring, German philosopher, positivist, economist and socialist
- Eugen Fischer, German professor of medicine, anthropology, and eugenics and Nazi
- Eugen Fischer , German geologist and historian
- Eugen Gerstenmaier, German Protestant theologian, resistance fighter, and politician, president of the Bundestag
- Eugen Goldstein, German Jewish physicist working with discharge tubes
- Eugen Gomringer, Bolivian-born Swiss concrete poet
- Eugen Grimminger, a member of the anti-Nazi White Rose resistance group in Germany
- Eugen Peter Jeljenic, birth name of Gene Rayburn, American gameshow host and radio personality
- Eugen Jochum, German conductor
- Eugen Landau, German Jewish banker and philanthropist
- Eugen Leviné, German Jewish communist revolutionary and one of the leaders of the short-lived Bavarian Council Republic
- Eugen Netto, German mathematician
- Eugen Nosko, German photographer
- Eugen J. Pentiuc, Romanian biblical scholar
- Eugen Richter, German politician in Imperial Germany
- Eugen Rochko, Russian-born German creator of the Mastodon
- Eugen Rosenstock-Huessy, German Jewish historian and social philosopher
- Eugen Sandow, Prussian bodybuilder and showman born Friedrich Wilhelm Müller
- Eugen Sänger, Austrian aerospace engineer
- Eugen Schauman, Swedish-speaking Finnish nationalist, nobleman, and assassin
- Eugen Schileru, Romanian art and literary critic, essayist, and translator
- Eugen Simion, Romanian literary critic, historian, and academician
- Eugén Strömberg, Swedish military doctor
- Eugen Šváb, Slovak swing musician
- Eugen Trică, Romanian football manager and former player
- Eugen Țurcanu, Romanian communist criminal and torturer
- Eugen Weidmann, German criminal and serial killer, last person publicly executed in France
- Eugen Zasavițchi, Moldovan footballer