Cognomen Cavanillas (Cavanillas 
) , throughout the world, is a rare last name. The last name Cavanillas is habitual in Spain, where it is a rare surname, Argentina, and Costa Rica. Not in comparison with a country's population, it is the most numerous in Spain, Argentina, and Mexico. Likewise, Cavanillas is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cavanillas | Mexico, Spain, Argentina, Peru, France |
| isidro alfonso cavanillas Roman Catholic archbishop (b. 1702) |
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rafael cavanillas prósper Spanish politician, ES (b. 1899) |
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julián cortés cavanillas Spanish writer (1908-1991), ES (b. 1909) |
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| vimerson cavanillas Brazilian actor, BR (b. 1971) |
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| aurora bueno cavanillas researcher ORCID ID = 0000-0002-0649-3016 |
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| isidro alfonso de cavanillas |
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| matías de bayetola y cavanillas |
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