Cognomen Iasynskyi (Iasynskyi 
) , in all the world, is a very rare family name. The family name Iasynskyi is habitual in Czechia, where it is a rare surname, Spain, where it is a very rare surname, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Iasynskyi | Czechia, Spain, Ukraine |