Bonisław [bɔˈniswaf] is a village in the administrative district of Gmina Gozdowo, within Sierpc County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) east of Gozdowo, 20 km (12 mi) south of Sierpc, and 102 km (63 mi) north-west of Warsaw.