Surname Vlatko (Vlatko 
, Влатко 
) , in the entire world, is quite a common cognomen. The surname Vlatko is habitual in Southern Europe, particularly North Macedonia, where it is a common surname, Croatia, where it is quite a rare surname, and Serbia, where it is a rare surname. Measured by absolute frequency, it is commonest in North Macedonia, Australia, and Serbia. Also, Vlatko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vlatko | North Macedonia, Bosnia and Herzegovina, Croatia, Serbia, Montenegro |
| Влатко | Serbia, Russia, Ukraine |