Family name Ontoseno (Ontoseno 
) , in the entire world, is a rare last name. The family name Ontoseno is characteristic of South-eastern Asia, particularly Indonesia, where it is a rare surname. Very seldom, Ontoseno is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ontoseno | Indonesia |
| ton ontoseno Indonesian political candidate, ID |
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