Cognomen بيلاس (Bilas 
, Bellas 
, بيلاس) , around the world, is a common family name. The cognomen بيلاس is habitual in Monaco, where it is quite a common surname, Saint Lucia, and Greece, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in India, the United States, and Greece. More prevalently, بيلاس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bilas | Greece, Bangladesh, Poland, United States, India |
| Bellas | Greece, Philippines, Brazil, United States, India |