Family name Barbarus (Barbaro 
, Bárbaro 
, Barbarus 
) , all around the world, is a common last name. The surname Barbarus is characteristic of Italy, where it is quite a common surname, Argentina, where it is quite a rare surname, and Australia. In absolute terms, this name is the most popular in Italy, the United States, and Argentina. Very seldom, Barbarus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Barbaro | Argentina, Italy, Brazil, United States, Cuba |
| Bárbaro | Argentina, Spain, Brazil, United States, Cuba |
| Barbarus | France, Italy, United States, Turkey, Croatia |
| Барбар | Kazakhstan, Russia, Ukraine, Kyrgyzstan |
| gaius atilius barbarus suffect consul in 71 AD (b. 50) |
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| titus sabinius barbarus (b. 100) |
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| marcus vettulenus civica barbarus 2nd century Roman senator and consul (b. 125) |
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| titus statilius barbarus commander under Septimius Severus |
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| gaius julius barbarus prefect of cohors VI Nerviorum in the 2nd century |
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| emin barbarus researcher (ORCID 0000-0001-8586-9810) |
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| appuleius barbarus Roman doctor in the 1st century |
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| publius rubrius barbarus governor of the province of Egypt |
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| publius rubrius barbarus eques and governor of Roman Egypt |
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Sare, Ismet, Yusuf, Meryem, Mesude, Aleyna, Robert, Hikmet, Hülya, Fatma, Yaşar, Marilyn, Melahat, Mustafa, Ramazan, Theresa, Özgür, Michelle, Iskender, Özcan, Hüseyi N, Hakan, Erkan, Paul, Peri, Lori, Ezgi, Merve, Sevgi, Ayşe, Aykut, Hasan, Ahmet, Beyza, Burak, Petra, Rabia, Recep, Leyla, Linda, James, Belma, and I Skender