Kiersy [ˈkʲɛrsɨ] is a village in the administrative district of Gmina Braniewo, within Braniewo County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 10 kilometres (6 mi) south-east of Braniewo and 71 km (44 mi) north-west of the regional capital Olsztyn.