Family name Ostanek (Ostanek 
) , all over the world, is a rare cognomen. The surname Ostanek is habitual in Slovenia, where it is quite a rare surname, Poland, where it is a rare surname, and Croatia. Not in comparison with a country's population, this name is the most popular in Slovenia, Poland, and the United States. Also, Ostanek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ostanek | United Kingdom, Poland, United States, Slovenia, Germany |
|
walter ostanek Canadian musician, CA (b. 1935) |
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| france ostanek (b. 1902) |
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| barbara ostanek researcher |
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| barbara ostanek SI (b. 1972) |
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| majda ostanek SI |
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| simona ostanek SI |
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| adam adrian ostanek PL (b. 1983) |
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