Family name Mendez Vallejo (Mendez Vallejo 
) , worldwide, is a very rare last name. The last name Mendez Vallejo is habitual in Ecuador, where it is a rare surname, Spain, where it is a very rare surname, and Chile.
| VARIANT | COUNTRY |
|---|---|
| Mendez Vallejo | Ecuador, United States, Chile, Spain |
Johan, Nelly Ruth, and Joffre Fredo