Korsze [ˈkɔrʂɛ] (German: Korschen) is a town in Kętrzyn County, Warmian-Masurian Voivodeship, Poland, with 4,724 inhabitants (2004). It is a railroad junction, located along the major Olsztyn - Ełk - Białystok line, with less important connections to Bartoszyce and Skandawa.