Family name Vallejo Hidalgo (Vallejo Hidalgo 
) , across the world, is a very rare last name. The cognomen Vallejo Hidalgo is habitual in Ecuador, where it is a rare surname, Spain, where it is a very rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Vallejo Hidalgo | Argentina, Spain, Ecuador |