Surname Яньковський (Яньковський 
) , across the world, is an extremely rare cognomen. The family name Яньковський is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Яньковський | Ukraine |
Iankovskii, Yankovskii, Yankovskiy, and Yankovsky