Last name Pineiros (Pineiros 
) , in the world, is a very rare cognomen. The last name Pineiros is characteristic of Latin America and the Caribbean, particularly Colombia, where it is a very rare surname, Ecuador, and Peru. Not in comparison with a country's population, it most frequently occurs in Colombia, the United States, and Peru. Very seldom, Pineiros is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pineiros | Peru, Colombia, United States, Ecuador, Brazil |