Bienduszka [bjɛnˈduʂka] is a village in the administrative district of Gmina Zbójna, within Łomża County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 9 kilometres (6 mi) south-west of Zbójna, 28 km (17 mi) west of Łomża, and 100 km (62 mi) west of the regional capital Białystok.