Surname Ростоцкии (Ростоцкии 
) , all over the world, is an extremely rare cognomen. The last name Ростоцкии is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ростоцкии | Russia |
Rostotskii, and Rostotskyy