Last name Pi Eiro (Pi Eiro 
) , all around the world, is a rare surname. The cognomen Pi Eiro is characteristic of Latin America and the Caribbean, particularly Puerto Rico, where it is quite a rare surname, the Dominican Republic, where it is a rare surname, and Mexico, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pi Eiro | Mexico, Dominican Republic, United States, Puerto Rico, Peru |