Kamieniec is a common Slavic (especially Polish) toponym, usually denoting a place founded on a rocky mountain or stony embankment of a river or stream. Places called Kamieniec include:
- Kamieniec Litewski, former name of Kamianiec in Belarus
- Kamieniec Podolski, former Polish fortress and former name of Kamianets-Podilskyi in Ukraine
- Kamieniec, Gmina Kłecko in Greater Poland Voivodeship (west-central Poland)
- Kamieniec, Gmina Trzemeszno in Greater Poland Voivodeship (west-central Poland)
- Kamieniec, Grodzisk Wielkopolski County in Greater Poland Voivodeship (west-central Poland)
- Kamieniec, Aleksandrów County in Kuyavian-Pomeranian Voivodeship (north-central Poland)
- Kamieniec, Radziejów County in Kuyavian-Pomeranian Voivodeship (north-central Poland)
- Kamieniec, Toruń County in Kuyavian-Pomeranian Voivodeship (north-central Poland)
- Kamieniec, Lesser Poland Voivodeship (south Poland)
- Kamieniec, Łódź Voivodeship (central Poland)
- Kamieniec, Lower Silesian Voivodeship (south-west Poland)
- Kamieniec Wrocławski in Lower Silesian Voivodeship
- Kamieniec Ząbkowicki in Lower Silesian Voivodeship (German Camentz)
- Kamieniec, Gostynin County in Masovian Voivodeship (east-central Poland)
- Kamieniec, Siedlce County in Masovian Voivodeship (east-central Poland)
- Kamieniec, Pomeranian Voivodeship (north Poland)
- Kamieniec, Silesian Voivodeship (south Poland)
- Kamieniec, Kielce County in Świętokrzyskie Voivodeship (south-central Poland)
- Kamieniec, Opatów County in Świętokrzyskie Voivodeship (south-central Poland)
- Kamieniec, Sandomierz County in Świętokrzyskie Voivodeship (south-central Poland)
- Kamieniec, Staszów County in Świętokrzyskie Voivodeship (south-central Poland)
- Kamieniec, Warmian-Masurian Voivodeship (north Poland)
- Kamieniec, West Pomeranian Voivodeship (north-west Poland)