Cognomen Blanku (Blanco 
, Branco , Branku 
) , around the globe, is a widespread family name. The family name Blanku is characteristic of Costa Rica, where it is a common surname, Venezuela, and Portugal (explore the name in all countries). Not in comparison with a country's population, the name is most common in Latin America and the Caribbean, particularly Mexico, Argentina, and Venezuela. Much less frequently, Blanku is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Branco, Blanco | Mexico, Spain, Argentina, Brazil, Venezuela |
| Branku | India, Nigeria |