Family name Siviakov (Siviakov 
, Сивяков 
) , globally, is a rare cognomen. The family name Siviakov is characteristic of Russia, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Russia, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Siviakov | Russia, Georgia |
| Сивяков | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |