In the entire world, Gallero (Gallero 
) is a very rare boy's first name. The first name Gallero is characteristic of Latin America and the Caribbean, particularly Colombia, where it is a very rare masculine name, and Mexico. More prevalently, Gallero is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gallero | Argentina, United States, Spain, Philippines, Uruguay |