Gmina Barczewo is an urban-rural gmina (administrative district) in Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. Its seat is the town of Barczewo, which lies approximately 14 kilometres (9 mi) north-east of the regional capital Olsztyn. The gmina covers an area of 319.85 square kilometres (123.5 sq mi), and as of 2006 its total population is 16,525, of which the population of Barczewo is 7,401, and the population of the rural part of the gmina is 9,124.