Ostrówek may refer to the following places in Poland:

In Greater Poland Voivodeship (west-central Poland):

In Kuyavian-Pomeranian Voivodeship (north-central Poland):

In Łódź Voivodeship (central Poland):

In Lublin Voivodeship (east Poland):

In Masovian Voivodeship (east-central Poland):

In Podlaskie Voivodeship (north-east Poland):

In Subcarpathian Voivodeship (south-east Poland):

Others

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