Surname كوسار (Kosar 
, كوسار , Cossar 
) , around the world, is a common last name. The last name كوسار is characteristic of Slovenia, where it is quite a common surname, Pakistan, where it is quite a rare surname, and Slovakia. Not in comparison with a country's population, the name is most common in Pakistan, India, and the United States. Likewise, كوسار is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosar | Iran, United States, India, Pakistan, Iraq |
| كوسار | Iraq, Iran |
| Cossar | United Kingdom, Democratic Republic of the Congo, Italy, United States, Slovakia |