Gmina Karniewo is a rural gmina (administrative district) in Maków County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Karniewo, which lies approximately 8 kilometres (5 mi) south-west of Maków Mazowiecki and 67 km (41 mi) north of Warsaw.
The gmina covers an area of , and as of 2006 its total population is 5,448 (5,400 in 2011).
Gmina Karniewo contains the villages and settlements of Baraniec, Byszewo, Byszewo-Wygoda, Cheà Âchy Dzierskie, Cheà Âchy Ià Âowe, Cheà Âchy Kmiece, Cheà Âchy-Chabdzyno, Cheà Âchy-Jakusy, Cheà Âchy-Klimki, Chrzanowo-Bronisze, Czarnostów, Czarnostów-Polesie, Goà Âciejewo, Karniewo, Konarzewo-Bolesty, Krzemieà Â, Leà Âniewo, à Âukowo, Malechy, Milewo-Malonki, Milewo-Wypychy, Obiecanowo, Oà Ânica, Rafaà Ây, Romanowo, Rutki, Sà Âoniawy, Szlasy-Zà Âotki, Szwelice, Tà Âucznice, Wólka à Âukowska, Wronowo, à »abin Karniewski, à »abin à Âukowski, Zakrzewo, Zalesie, ZarÃÂby and Zelki Dàbrowe.
Gmina Karniewo is bordered by the town of Maków Mazowiecki and by the gminas of Czerwonka, Goà Âymin-Oà Ârodek, Gzy, Krasne, Pà Âoniawy-Bramura, Puà Âtusk and Szelków.