Last name Феррейро (Ferreiro 
, Феррейро 
) , all over the world, is a common surname. The last name Феррейро is habitual in Andorra, where it is quite a common surname, Paraguay, and Uruguay (explore the name in all countries). In absolute terms, it is commonest in Argentina, Spain, and Paraguay. Much less frequently, Феррейро is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ferreiro | Spain, Paraguay, Mexico, United States, Argentina |
| Феррейро | Russia |