Cognomen Isauro (Isauro 
) , globally, is a common family name. The surname Isauro is habitual in Mexico, where it is quite a rare surname, Honduras, and Spain, where it is a rare surname. Measured by absolute frequency, it is commonest in Mexico, Spain, and Venezuela. Also, Isauro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isauro | Mexico, Philippines, Brazil, Peru, Argentina |