Drzewianowo [dʐɛvjaˈnɔvɔ] is a village in the administrative district of Gmina Mrocza, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 8 kilometres (5 mi) east of Mrocza, 16 km (10 mi) north-east of Nakło nad Notecią, and 27 km (17 mi) north-west of Bydgoszcz.