Cognomen ג'וקו (Joko 
, ג'וקו 
) , in the entire world, is a common family name. The last name ג'וקו is characteristic of Indonesia, where it is quite a common surname, Brunei, where it is quite a rare surname, and Botswana. Measured by absolute frequency, this name is the most popular in Indonesia, India, and South Africa. More frequently, ג'וקו is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Joko | Indonesia, Japan, South Africa, India, Malaysia |
| ג'וקו | Israel |