Sumowo [suˈmɔvɔ] is a village in the administrative district of Gmina Zbiczno, within Brodnica County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 4 kilometres (2 mi) west of Zbiczno, 11 km (7 mi) north-west of Brodnica, and 58 km (36 mi) north-east of Toruń.