Family name Ostor (Ostor 
) , all around the world, is a rare last name. The surname Ostor is habitual in Hungary, where it is quite a rare surname, Colombia, where it is a rare surname, and France, where it is a very rare surname. Much less frequently, Ostor is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ostor | France, United States, Hungary, Colombia, India |