Cognomen Rumiantsava (Rumiantsava 
) , in the entire world, is a very rare last name. The family name Rumiantsava is characteristic of Belarus, where it is a rare surname, Poland, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rumiantsava | Belarus, United States, Poland |