Last name Alvernaz (Alvernaz 
) , globally, is quite a rare cognomen. The cognomen Alvernaz is habitual in Portugal, where it is quite a rare surname, Brazil, where it is a rare surname, and Uruguay. Measured by absolute frequency, the name is most common in Brazil, the United States, and Portugal.
| VARIANT | COUNTRY |
|---|---|
| Alvernaz | Brazil, Canada, United States, Portugal, Belgium |
| diogo fernes alvernaz Azorean writer and politician., PT (b. 1821) |
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josé vieira alvernaz Portuguese prelate (1898-1986), PT (b. 1898) |
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| christiano costa vilela alvernaz Brazilian politician, BR (b. 1976) |
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