Cognomen Kosyakin (Косякин 
, Kosyakin 
) , around the world, is quite a rare last name. The family name Kosyakin is habitual in Russia, where it is quite a rare surname, Estonia, where it is a rare surname, and Lithuania. In absolute terms, the name is most common in Russia, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Косякин | Kazakhstan, Russia, Ukraine, Belarus |
| Kosyakin | Germany, Russia, Estonia, United States, Lithuania |