Family name Fiardo (Fiardo 
) , around the world, is a very rare surname. The last name Fiardo is habitual in France, where it is a very rare surname, Argentina, where it is an extremely rare surname, and the United States. Very seldom, Fiardo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fiardo | Argentina, France, United States, Philippines |