The Province of Silesia (; ; Silesian: Prowincyjo Slonsko) was a province of the German Kingdom of Prussia, existing from 1815 to 1919, when it was divided into the Upper and Lower Silesia provinces, and briefly again from 1938 to 1941. As a Prussian province, Silesia became part of the German Empire during the Prussian-led unification of Germany in 1871. The provincial capital was Breslau (present-day Wroclaw, Poland).