Harsz [xarʂ] (German: Haarschen) is a village in the administrative district of Gmina Pozezdrze, within Węgorzewo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) west of Pozezdrze, 9 km (6 mi) south of Węgorzewo, and 94 km (58 mi) north-east of the regional capital Olsztyn.

The village has a population of 580.