Główczyn may refer to the following places: Główczyn, Kuyavian-Pomeranian Voivodeship (north-central Poland) Główczyn, Grójec County in Masovian Voivodeship (east-central Poland) Główczyn, Płock County in Masovian Voivodeship (east-central Poland) Główczyn, Greater Poland Voivodeship (west-central Poland)