Zamrzenica [zamʐɛˈnit͡sa] is a village in the administrative district of Gmina Lubiewo, within Tuchola County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 9 kilometres (6 mi) west of Lubiewo, 15 km (9 mi) south of Tuchola, and 40 km (25 mi) north of Bydgoszcz.