Last name Яньковский (Яньковский 
) , in the world, is an extremely rare cognomen. The surname Яньковский is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname. More prevalently, Яньковский is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Яньковский | Russia, Belarus |
Iankovskii, Yankovskii, Yankovskiy, and Yankovsky