Jankowo [janˈkɔvɔ] is a village in the administrative district of Gmina Kętrzyn, within Kętrzyn County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 9 kilometres (6 mi) east of Kętrzyn and 75 km (47 mi) north-east of the regional capital Olsztyn.