Gromadno [ɡrɔˈmadnɔ] is a village in the administrative district of Gmina Kcynia, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 8 kilometres (5 mi) north-west of Kcynia, 16 km (10 mi) south-west of Nakło nad Notecią, and 40 km (25 mi) west of Bydgoszcz.