Surname Sidaravičius (Sidaravičius 
) , all over the world, is a very rare cognomen. The family name Sidaravičius is characteristic of Northern Europe, particularly Lithuania, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sidaravičius | Lithuania |
| jonas sidaravičius LT (b. 1937) |
|