Surname Радецькая (Радецькая 
) , in the entire world, is an extremely rare last name. The cognomen Радецькая is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Радецькая | Ukraine |
Radeckaia, Radetckaia, Radetskaia, and Radetskaya