Siemienie [ɕɛˈmjɛɲɛ] is a village in the administrative district of Gmina Drobin, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 10 kilometres (6 mi) west of Drobin, 22 km (14 mi) north-east of Płock, and 96 km (60 mi) north-west of Warsaw.