Cognomen Bastiao (Bastiao 
) , globally, is a rare family name. The surname Bastiao is habitual in Portugal, where it is a rare surname, Brazil, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, this name is the most popular in Brazil, Portugal, and the United States. Also, Bastiao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bastiao | Portugal, France, India, Brazil, United States |