Gmina Ostróda is a rural gmina (administrative district) in Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. Its seat is the town of Ostróda, although the town is not part of the territory of the gmina. The gmina covers an area of 401.06 square kilometres (154.9 sq mi), and as of 2006 its total population is 15,501. The gmina contains part of the protected area called Dylewo Hills Landscape Park.