Surname Rjabko (Рябко 
, Rjabko 
) , around the world, is quite a common family name. The family name Rjabko is habitual in Ukraine, where it is quite a rare surname, Kazakhstan, and Latvia. Not in comparison with a country's population, this name is the most popular in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Рябко | Kazakhstan, Ukraine, Belarus, Kyrgyzstan, Russia |
| Rjabko | Latvia, Germany, Belarus |