Barczewo (German: Wartenburg/Ostpreussen) is a place in Olsztyn County, Warmian-Masurian Voivodeship, Poland. It is located 20 km NE of Olsztyn.It has been a part of Poland since 1946. The municipality changed its name on December 4, 1964 and is named after Walenty Barczewski (1865-1928).