Cognomen Oostenrijk (Oostenrijk 
) , in the world, is a rare last name. The cognomen Oostenrijk is habitual in Western Europe, particularly Netherlands, where it is quite a rare surname, Belgium, where it is a rare surname, and Austria.
| VARIANT | COUNTRY |
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| Oostenrijk | Netherlands, Belgium, Spain, Austria, United States |
Austria, Ooster, Schadewijk, Schaijk, Wijk, Áustria, Österreich, and אוסטריה
| louis van oostenrijk BE (b. 1728) |
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jan wouter oostenrijk NL (b. 1965) |
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| nienke oostenrijk Dutch singer, NL (b. 1950) |
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| pauline oostenrijk Dutch oboist, NL (b. 1967) |
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| johannes oostenrijk Dutch scientific instrument maker |
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| bart oostenrijk researcher |
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| daan van oostenrijk |
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