Klejnówko [klɛi̯ˈnufkɔ] 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) north-west of Braniewo and 85 km (53 mi) north-west of the regional capital Olsztyn.