Cognomen Demetrio (Demetrio 
, Demetrius 
, Δημήτριος 
, among others...) , around the globe, is a common surname. The family name Demetrio is characteristic of Mexico, where it is quite a common surname, Spain, and Jamaica. Measured by absolute frequency, it is commonest in Mexico, Spain, and Brazil. Also, Demetrio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demetrio | Philippines, Brazil, Mexico, United States, Peru |
| Demetrius | Spain, Philippines, Brazil, Mexico, United States |
| Δημήτριος | Greece |
| Деметрий, Деметрио | Russia |
| Деметріо | Ukraine |
D'Mitr, Demeter, Demetre, Demetri, Demetrios, Demetriusz, Demitri, Demétrio, Demėtrio, Dimitar, Dimitri, Dimitrij, Dimitrios, Dimitris, Dimitry, Dimtri, Dimítrios, Dmitr, Dmitri, Dmitrii, Dmitrij, Dmitriy, Dmitry, Dumitru, Démetrio, Démétrio, Démétrios, Mitar, Δημήτρης, Δημήτριο, Деметер, Деметр, Деметре, Деметриос, Деметриус, Дзмітрый, Дима, Димитар, Димитр, Димитра, Димитри, Димитрий, Димитриос, Димитрис, Димитрије, Димитрій, Димитър, Димка, Димочка, Дми'Трий, Дмитрий, Дмитро, Дмітрій, Думитру, Думітру, Митар, Митя, ديمتري, ديمتريوس, ديميتري, დიმიტრი, ディミトリー, ドミトリ, and ドミトリー
| charles hermann demetrio botanist (1845-1936), US (b. 1845) |
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| anna demetrio Italian actor, IT (b. 1892) |
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duccio demetrio Italian writer, IT (b. 1945) |
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| luis demetrio Mexican singer and composer, MX (b. 1931) |
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víctor demetrio basketball player, ES (b. 1995) |
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| thomas a. demetrio American lawyer, US (b. 1947) |
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| givaldo farias demetrio Brazilian politician, BR (b. 1953) |
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| rosalba demetrio Italian archaeologist and high school teacher (1963-), IT (b. 1963) |
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| nicola demetrio Roman Catholic bishop |
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| daniela garcia borges demetrio researcher |
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| rosangela demetrio researcher (ORCID 0000-0002-2610-5543) |
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| pablo martin demetrio Argentine ecologist, AR |
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