Cognomen Сільвановіч (Сільвановіч 
) , all around the world, is a very rare surname. The family name Сільвановіч is characteristic of Eastern Europe, particularly Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Сільвановіч | Ukraine |
| мікола сільвановіч BY (b. 1917) |
|