Cognomen Barreyro (Barreyro 
) , in all the world, is quite a rare surname. The last name Barreyro is characteristic of Argentina, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Philippines. Not in comparison with a country's population, it is the most numerous in Argentina, Philippines, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Barreyro | Philippines, United Arab Emirates, Argentina, Spain, United States |
| paulino barreyro (b. 1778) |
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héctor barreyro Argentinian physician, AR (b. 1883) |
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| laura barreyro researcher |
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| paula barreyro researcher (ORCID 0000-0001-5226-4751) |
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| juan pablo barreyro researcher ORCID ID = 0000-0002-1606-1049 |
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| guido barreyro Argentine footballer, AR (b. 1988) |
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| cristal barreyro ES |
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Mar, Tito, Nico, Nora, Elsa, Eloy, Enzo, Hugo, Ines, Ilda, Olga, Omar, Ubal, Maria, Mario, Marta, Marco, Marã, Mabel, Mirta, Sarah, Sixto, Juan, Sonia, John, Luis, Sol, Ana, Ben, Paz, Ron, Lia, Luz, Alan, Arra, Abel, Aida, Kamy, Raul, Rosa, Rose, Rene, Rick, Dora, Ladi, Leah, Lina, Jose, and Steph