Rozwarzyn

Rozwarzyn is a village in the administrative district of Gmina Nakło nad Notecią, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 4 km south-west of Nakło nad Notecią and 29 km west of Bydgoszcz. It is located in the ethnographic region of Pałuki.

History
During the German occupation (World War II), some Poles from Rozwarzyn were among the victims of a massacre carried out by the German Selbstschutz in nearby Polichno in October 1939 as part of the Intelligenzaktion.