Kołoząb [kɔˈwɔzɔmp] is a village in the administrative district of Gmina Sochocin, within Płońsk County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) south of Sochocin, 8 km (5 mi) east of Płońsk, and 60 km (37 mi) north-west of Warsaw.