Family name Olvar (Olvar 
) , across the world, is a very rare last name. The cognomen Olvar is habitual in Latin America and the Caribbean, particularly Argentina, where it is a very rare surname, Honduras, and Venezuela. Also, Olvar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olvar | Norway, Italy, Argentina, Colombia, Venezuela |