Ostre Bardo [ˈɔstrɛ ˈbardɔ] is a village in the administrative district of Gmina Sępopol, within Bartoszyce County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 10 kilometres (6 mi) north of Sępopol, 17 km (11 mi) north-east of Bartoszyce, and 71 km (44 mi) north-east of the regional capital Olsztyn.