In all the world, Kosto (Kosto 
, Cost 
, Costar 
) is quite a rare unisex given name. The first name Kosto is habitual in Western Asia, particularly Oman, where it is quite a rare dominantly boy's, but uncommonly female name, Qatar, where it is quite a rare male name, and Bahrain. Not in comparison with a country's population, it is commonest in Bangladesh, Saudi Arabia, and Oman. More prevalently, Kosto is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kosto | Algeria, Bangladesh, Netherlands, United States, Saudi Arabia |
| Cost | Germany, Algeria, Netherlands, United States, Saudi Arabia |
| Costar | Spain, France, United States, United Kingdom, Romania |
| Kosten | Germany, Netherlands, France, Indonesia, United States |