Klejnowo [klɛi̯ˈnɔvɔ] is a village in the administrative district of Gmina Braniewo, within Braniewo County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 6 kilometres (4 mi) west of Braniewo and 84 km (52 mi) north-west of the regional capital Olsztyn.