Miłusze [miˈwuʂɛ] is a village in the administrative district of Gmina Prostki, within Ełk County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-west of Prostki, 12 km (7 mi) south of Ełk, and 124 km (77 mi) east of the regional capital Olsztyn.

In his youth, it was a favorite fishing spot for Otto von Bismarck.