Cognomen Diego Saul (Diego Saul 
) , worldwide, is a very rare last name. The surname Diego Saul is habitual in Chile, where it is a very rare surname, and Spain. More frequently, Diego Saul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Diego Saul | Chile, Peru, Ecuador, Spain, Costa Rica |
Reyes, Munguia, Alvarez, Slepicki, Prudencio, Fernandez, Garcia Castro, and Blanco Escobar