Cognomen סירוס (Sirus 
, סירוס 
) , throughout the world, is a rare last name. The last name סירוס is habitual in Indonesia, where it is a very rare surname, Finland, and Georgia. In absolute terms, this name is the most popular in Indonesia, the United States, and India. More prevalently, סירוס is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sirus | Iran, Indonesia, United States, India, Azerbaijan |
| סירוס | Israel |