Wiercień Mały [ˈvjɛrt͡ɕɛɲ ˈmawɨ] is a village in the administrative district of Gmina Siemiatycze, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 8 kilometres (5 mi) north of Siemiatycze and 72 km (45 mi) south of the regional capital Białystok.