Słomkowo [swɔmˈkɔvɔ] is a village in the administrative district of Gmina Staroźreby, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) south of Staroźreby, 20 km (12 mi) east of Płock, and 82 km (51 mi) north-west of Warsaw.