Olszyny may refer to:

• Olszyny, Lower Silesian Voivodeship (south-west Poland)
• Olszyny, Podlaskie Voivodeship (north-east Poland)
• Olszyny, Łódź Voivodeship (central Poland)
• Olszyny, Chrzanów County in Lesser Poland Voivodeship (south Poland)
• Olszyny, Gmina Rzepiennik Strzyżewski in Lesser Poland Voivodeship (south Poland)
• Olszyny, Gmina Wojnicz in Lesser Poland Voivodeship (south Poland)
• Olszyny, Masovian Voivodeship (east-central Poland)
• Olszyny, Pomeranian Voivodeship (north Poland)
• Olszyny, Warmian-Masurian Voivodeship (north Poland)