Around the world, رايكو (Rajko 
, Raiko 
, رايكو) is quite a common predominantly male, but scarcely girly first name. The given name رايكو is habitual in Southern Europe, particularly Croatia, where it is quite a common boy's name, Montenegro, and Slovenia. In absolute terms, it is commonest in Japan, Croatia, and Slovenia. Very seldom, رايكو is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rajko | Bosnia and Herzegovina, Montenegro, Slovenia, Serbia, Croatia |
| Raiko | Cuba, Japan, India, Germany, United States |