Sieniewice [ɕɛɲɛˈvit͡sɛ] is a village in the administrative district of Gmina Drohiczyn, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 4 kilometres (2 mi) north of Drohiczyn, 14 km (9 mi) west of Siemiatycze, and 83 km (52 mi) south-west of the regional capital Białystok.