Pruszków [ˈpruʂkuf] is a city in east-central Poland, capital of Pruszków County in the Masovian Voivodeship. Pruszków is located along the western edge of the Warsaw metropolitan area.
Pruszków is the largest city in the Warsaw metropolitan area outside Warsaw. Since the 19th century it has developed as an industrial centre located on an important railway line. In the 1990s and 2000s the city was synonymous with the "Pruszków gang", one of two major organised crime groups in the country. It is known for the country's chief indoor velodrome and the Dulag 121 Museum at the former Nazi German camp for Poles expelled from Warsaw.