Cognomen زاركو (Zarko 
, Zarco 
, زاركو) , globally, is a common family name. The surname زاركو is habitual in Mexico, where it is quite a common surname, Panama, and Montenegro, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Mexico, Argentina, and Philippines. Also, زاركو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zarko | Bosnia and Herzegovina, Mexico, Serbia, Spain, Argentina |
| Zarco | Philippines, Mexico, Spain, Argentina, United States |