Cognomen Oszast (Oszast 
) , all around the world, is a very rare family name. The family name Oszast is characteristic of Poland, where it is a rare surname, Ukraine, where it is an extremely rare surname, and the United States. Also, Oszast is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oszast | Poland, United States, Ukraine |
| zbigniew oszast PL (b. 1903) |
|
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| helena oszast Polish basketball player (1926-2014), PL (b. 1926) |
|