Family name Reguiro (Reguiro 
) , in the entire world, is a very rare cognomen. The family name Reguiro is habitual in Philippines, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Much less frequently, Reguiro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reguiro | Argentina, Philippines |