Cognomen Козулиа (Козулиа 
, Kozulia, Kozulya 
) , around the world, is a very rare surname. The family name Козулиа is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Russia, Belarus, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Козулиа | Russia |
| Kozulya | Russia, Ukraine, United States, Belarus |