Cognomen Oliar (Oliar 
) , all over the world, is a rare family name. The last name Oliar is habitual in Malaysia, where it is a rare surname, Israel, and Bangladesh. Not in comparison with a country's population, the name is most common in Bangladesh, Malaysia, and Brazil. Also, Oliar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oliar | India, Brazil, Bangladesh, Malaysia, Saudi Arabia |