Cognomen Моцко (Mocko 
, Моцко 
, Motsko 
) , in the world, is quite a rare last name. The cognomen Моцко is habitual in Slovakia, where it is quite a common surname, Serbia, where it is quite a rare surname, and Czechia, where it is a rare surname. Measured by absolute frequency, it is commonest in Slovakia, Poland, and the United States. Likewise, Моцко is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mocko | Czechia, Democratic Republic of the Congo, United States, Poland, Slovakia |
| Моцко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Motsko | Canada, United States, Belarus |