Mieczniki [mjɛt͡ʂˈniki] is a village in the administrative district of Gmina Banie Mazurskie, within Gołdap County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 3 kilometres (2 mi) west of Banie Mazurskie, 22 km (14 mi) south-west of Gołdap, and 111 km (69 mi) north-east of the regional capital Olsztyn.