Łodzia [ˈwɔd͡ʑa] is a village in the administrative district of Gmina Sadki, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 6 kilometres (4 mi) south of Sadki, 9 km (6 mi) west of Nakło nad Notecią, and 36 km (22 mi) west of Bydgoszcz.