Miastowice [mjastɔˈvit͡sɛ] is a village in the administrative district of Gmina Kcynia, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Kcynia, 20 km (12 mi) south of Nakło nad Notecią, and 36 km (22 mi) south-west of Bydgoszcz.