Retkowo [rɛtˈkɔvɔ] is a village in the administrative district of Gmina Szubin, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 13 kilometres (8 mi) south-west of Szubin, 24 km (15 mi) south of Nakło nad Notecią, and 33 km (21 mi) south-west of Bydgoszcz.