Family name Яко (Jako 
, Yako 
, Яко 
) , all around the world, is a common surname. The last name Яко is habitual in Hungary, where it is quite a rare surname, Bulgaria, and Papua New Guinea. Measured by absolute frequency, the name is most common in the Democratic Republic of the Congo, South Africa, and Algeria. Likewise, Яко is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jako | Egypt, Malaysia, South Africa, Algeria, India |
| Yako | Democratic Republic of the Congo, Malaysia, South Africa, Algeria, India |
| Яко | Bulgaria, Kazakhstan, Russia, Ukraine |
| Yakou | Morocco, Cameroon, Ivory Coast, United States, Algeria |