Family name Vairo (Vairo 
) , in the world, is quite a rare last name. The cognomen Vairo is characteristic of Uruguay, where it is quite a rare surname, Italy, and El Salvador. In absolute terms, the name is most common in Italy, Argentina, and the United States. Much less frequently, Vairo is the forename as well as the last name.
| leonardo vairo Roman Catholic bishop (b. 1523) |
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| giuseppe vairo Italian physician and chemist (18th century) (b. 1750) |
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| francesco vairo Italian politician (b. 1863) |
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federico vairo Argentine footballer (1930-2010), AR (b. 1930) |
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juan apolonio vairo Argentine footballer, AR (b. 1932) |
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carlos vairo Argentinian historian, AR (b. 1953) |
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| dominic vairo American football end (1912-2002), US (b. 1912) |
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| giuseppe vairo Italian catholic archbishop (1917-2001), IT (b. 1917) |
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| giuseppe vairo Italian association football player (1922-1947), IT (b. 1922) |
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| gaetano vairo Italian politician, IT (b. 1939) |
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| lou vairo American ice hockey coach, US (b. 1945) |
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| carmie vairo Canadian softball player (b. 1968) |
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| giuseppe vairo Italian structural engineer (1974-), IT (b. 1974) |
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| virginio vairo Italian automobile designer |
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| filippo vairo researcher (ORCID 0000-0001-6030-1903) |
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