Gmina Ostaszewo is a rural gmina (administrative district) in Nowy Dwór County, Pomeranian Voivodeship, in northern Poland. Its seat is the village of Ostaszewo, which lies approximately west of Nowy Dwór Gdaà Âski and south-east of the regional capital Gdaà Âsk.
The gmina covers an area of , and as of 2006 its total population is 3,204.
Gmina Ostaszewo contains the villages and settlements of Gniazdowo, Groblica, Jeziernik, Komarówka, Lubiszynek Pierwszy, Nowa Cerkiew, Nowa Koà Âcielnica, Ostaszewo, Palczewo, Piaskowiec and Puà Âkownikówka.
Gmina Ostaszewo is bordered by the gminas of Cedry Wielkie, Lichnowy, Nowy Dwór Gdaà Âski, Nowy Staw, Stegna and Suchy Dàb.
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