Cognomen Defino (Defino 
) , all around the world, is quite a rare family name. The family name Defino is characteristic of Argentina, where it is a rare surname, the United States, and Saudi Arabia. Not in comparison with a country's population, the name is most common in the United States, Argentina, and Philippines. Much less frequently, Defino is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Defino | Saudi Arabia, Brazil, United States, Argentina, Philippines |
| anthony defino US (b. 1936) |
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| matheus defino researcher (ORCID 0000-0001-5457-8527) |
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| helton luiz aparecido defino researcher |
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| helton defino researcher |
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