Surname Swietoslaw (Swietoslaw 
) , worldwide, is a rare family name. The family name Swietoslaw is habitual in Eastern Europe, particularly Poland, where it is a rare surname. Very seldom, Swietoslaw is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Swietoslaw | Argentina, Poland |
Golek, Nowacki, and Bratkowski