Family name Arnaldo Valentin (Arnaldo Valentin 
) , around the globe, is an extremely rare cognomen. The cognomen Arnaldo Valentin is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Arnaldo Valentin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arnaldo Valentin | Chile, Peru, Argentina |