Family name Oltar (Oltar 
) , worldwide, is an extremely rare surname. The family name Oltar is habitual in Nicaragua, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. More frequently, Oltar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oltar | United Kingdom, South Africa, Nicaragua, United States, India |