Ostrowy may refer to the following places:

• Ostrowy, Łódź Voivodeship (central Poland)
• Ostrowy, Gmina Gozdowo in Masovian Voivodeship (east-central Poland)
• Ostrowy, Gmina Zawidz in Masovian Voivodeship (east-central Poland)
• Ostrowy, Wyszków County in Masovian Voivodeship (east-central Poland)
• Ostrowy, Zwoleń County in Masovian Voivodeship (east-central Poland)
• Ostrowy, Greater Poland Voivodeship (west-central Poland)
• Ostrowy, Pomeranian Voivodeship (north Poland)
• Ostrowy, Działdowo County in Warmian-Masurian Voivodeship (north Poland)
• Ostrowy, Szczytno County in Warmian-Masurian Voivodeship (north Poland)