Surname Pia Carolina (Pia Carolina 
) , across the world, is a rare last name. The family name Pia Carolina is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a rare surname. More frequently, Pia Carolina is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pia Carolina | Australia, Argentina, Chile, United States, Ecuador |