Surname Адвар (Advar 
, Адвар 
) , throughout the world, is an extremely rare cognomen. The last name Адвар is habitual in Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, Mexico, where it is an extremely rare surname, and Brazil. More frequently, Адвар is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Advar | Brazil, Mexico, Honduras, Peru, India |
| Адвар | Russia |