Cognomen Valavičius (Valavičius 
, Валавичюс 
) , all over the world, is a very rare surname. The surname Valavičius is habitual in Lithuania, where it is a rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Valavičius | Lithuania |
| Валавичюс | Russia |
| algirdas valavičius LT (b. 1933) |
|