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Around the globe, 馬克思 (Marx , 馬克思) is quite a common largely masculine, but infrequently female forename. The first name 馬克思 is habitual in the Democratic Republic of the Congo, where it is quite a rare gender-neutral name, Paraguay, where it is quite a rare male name, and Trinidad and Tobago. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, Brazil, and the United States. More frequently, 馬克思 is the last name as well as the forename.
馬克思 is also a name for the fictitious and mythical characters: Marx , the operatic character in the opera Doktor und Apotheker.