Dłużniewo [dwuʐˈɲɛvɔ] is a village in the administrative district of Gmina Łomża, within Łomża County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 7 kilometres (4 mi) south-west of Łomża and 78 km (48 mi) west of the regional capital Białystok.