Family name Isaac Horacio (Isaac Horacio 
) , in the world, is an extremely rare cognomen. The last name Isaac Horacio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Isaac Horacio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isaac Horacio | Ecuador, Mexico, Chile, Costa Rica |