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Last name Sivoi (Sivoi
, Сивой
) , around the globe, is a rare cognomen. The family name Sivoi is habitual in Belarus, where it is a rare surname, Romania, and Italy, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Eastern Europe, particularly Romania, Belarus, and Russia. Much less frequently, Sivoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sivoi | Romania, Italy, India |
| Сивой | Belarus, Kazakhstan, Russia, Ukraine |