Cognomen Pierlas (Pierlas 
) , in all the world, is a very rare last name. The surname Pierlas is habitual in France, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pierlas | France, United States |
|
eugène caïs de pierlas Italian historian, FR (b. 1842) |
|