Maziarnia may refer to the following places:
- Maziarnia, Chełm County in Lublin Voivodeship (east Poland)
- Maziarnia, Tomaszów Lubelski County in Lublin Voivodeship (east Poland)
- Maziarnia, Nisko County in Subcarpathian Voivodeship (south-east Poland)
- Maziarnia, Stalowa Wola County in Subcarpathian Voivodeship (south-east Poland)