Across the world, Castoldi (Castoldi 
) is a rare epicene given name. The first name Castoldi is characteristic of Southern Europe, particularly Italy, where it is a rare unisex name. Predominantly, Castoldi is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Castoldi | Brazil, Italy, Argentina, United States, France |
| ray castoldi American musician, US |
|