Surname Osiadły (Osiadły 
) , in all the world, is a very rare last name. The family name Osiadły is characteristic of Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Osiadły | Poland |
Nowosiadły, and Osiadly
| efrem osiadły PL (b. 1930) |
|