Last name Dos Santos Barros (Dos Santos Barros 
) , globally, is a very rare family name. The cognomen Dos Santos Barros is habitual in Portugal, where it is a very rare surname, France, and Chile. Measured by absolute frequency, it is commonest in France, Brazil, and Portugal.
| VARIANT | COUNTRY |
|---|---|
| Dos Santos Barros | Portugal, Chile, France, Brazil |