Długie [ˈdwuɡʲɛ] is a village in the administrative district of Gmina Czarnia, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) south of Czarnia, 37 km (23 mi) north-west of Ostrołęka, and 121 km (75 mi) north of Warsaw.