Surname Caldeo (Caldeo 
) , in the entire world, is quite a rare cognomen. The last name Caldeo is habitual in Philippines, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Italy. Not in comparison with a country's population, the name is most common in Philippines, Italy, and Argentina.
| VARIANT | COUNTRY |
|---|---|
| Caldeo | Philippines, United Arab Emirates, Argentina, Italy, United States |