Family name Fausto Humberto (Fausto Humberto 
) , across the world, is an extremely rare cognomen. Much more frequently, Fausto Humberto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fausto Humberto | Costa Rica, Spain, Mexico, Ecuador, Peru |
Cisneros, Rodriguez, Lopez Alvear, Garcia Merino, Buenaño Cordova, Placencia Espejo, and Hidalgo Zambrano