Olszewko may refer to the following places: Olszewko, Masovian Voivodeship (east-central Poland) Olszewko, Kartuzy County in Pomeranian Voivodeship (north Poland) Olszewko, Słupsk County in Pomeranian Voivodeship (north Poland) Olszewko, Warmian-Masurian Voivodeship (north Poland)