Cognomen Castanheiro (Castanheiro 
) , around the globe, is quite a rare family name. The family name Castanheiro is characteristic of Portugal, where it is quite a rare surname, Brazil, where it is a rare surname, and France, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Castanheiro | Canada, Brazil, France, United States, Portugal |
| ana castanheiro researcher |
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| josé eduardo castanheiro researcher, ORCID id # 0000-0003-2990-6394 |
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| josé da silva castanheiro Brazilian judge, BR |
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| mário castanheiro |
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