Świnie Oko [ˈɕfiɲe ˈɔkɔ] is a village in the administrative district of Gmina Piecki, within Mrągowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 10 kilometres (6 mi) north-east of Piecki, 13 km (8 mi) south-east of Mrągowo, and 63 km (39 mi) east of the regional capital Olsztyn.
Before 1945 the area was part of Germany (East Prussia).
The village has a population of 2.
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