Cognomen Nayro (Nayro 
) , worldwide, is a very rare surname. The cognomen Nayro is characteristic of Latin America and the Caribbean, particularly Uruguay, where it is a rare surname, Nicaragua, where it is a very rare surname, and Colombia. More prevalently, Nayro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nayro | Uruguay, Brazil, Spain, Venezuela, Colombia |