In all the world, Isidro Humberto (Isidro Humberto 
) is a very rare boy's forename. The forename Isidro Humberto is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare male name, and Peru, where it is a very rare male name. Much less frequently, Isidro Humberto is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Isidro Humberto | Peru, Argentina, Chile, Ecuador, Costa Rica |