Surname Patricio Arnaldo (Patricio Arnaldo 
) , across the world, is a very rare last name. The cognomen Patricio Arnaldo is habitual in Latin America and the Caribbean, particularly Chile, where it is a rare surname. More frequently, Patricio Arnaldo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Patricio Arnaldo | Ecuador, Chile, Peru |