Cognomen Portuano (Portuano 
) , in the entire world, is a rare surname. The last name Portuano is habitual in Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, Colombia, and Ecuador, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly Colombia, Bolivia, and Mexico.
| VARIANT | COUNTRY |
|---|---|
| Portuano | Mexico, Peru, Colombia, Bolivia, Ecuador |