Miesiączkowo [mjɛɕɔnt͡ʂˈkɔvɔ] is a village in the administrative district of Gmina Górzno, within Brodnica County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies 29 kilometres (18 mi) north of Górzno, 32 km (20 mi) north-east of Brodnica, and 88 km (55 mi) north-east of Toruń.