Cognomen Виада (Viada 
, Виада 
, Wiada ) , in the world, is a rare surname. The cognomen Виада is habitual in Italy, where it is a rare surname, Argentina, and Chile. Not in comparison with a country's population, this name is the most popular in Italy, Argentina, and Mexico. Much less frequently, Виада is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Viada | Italy, Spain, Mexico, United States, Argentina |
| Виада | Russia |
| Wiada | Mexico |