Family name Ontana (Ontana 
) , globally, is a very rare surname. The last name Ontana is habitual in Thailand, where it is a very rare surname, Spain, and Venezuela, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Thailand, China, and Spain. Likewise, Ontana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ontana | Philippines, Thailand, Venezuela, Spain, China |