Family name Biscaia (Biscaia 
) , all around the world, is quite a rare surname. The family name Biscaia is habitual in Portugal, where it is quite a rare surname, Brazil, and Belgium, where it is a very rare surname. In absolute terms, it is commonest in Brazil, Portugal, and France.
| VARIANT | COUNTRY |
|---|---|
| Biscaia | Portugal, France, Argentina, Brazil, United States |
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antonio chalbaud biscaia Brazilian politician, BR (b. 1909) |
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antônio carlos biscaia Brazilian politician, BR (b. 1942) |
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| luís biscaia PT (b. 1928) |
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| rui biscaia researcher ORCID ID = 0000-0003-2752-4317 |
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| andré rosa biscaia researcher |
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| sara biscaia researcher |
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| isabela f b biscaia researcher (ORCID 0000-0002-3367-9801) |
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| samuel biscaia Portuguese association football player, PT (b. 1994) |
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