The Province of Hohenzollern was a district of Prussia from 1850 to 1946. It was located in Swabia, the region of southern Germany that was the ancestral home of the House of Hohenzollern, to which the kings of Prussia belonged.

The Kingdom of Prussia constituted the German state of Prussia between 1701 and 1918. It was the driving force behind the unification of Germany in 1866 and was the leading state of the German Empire until its dissolution in 1918. Although it took its name from the region called Prussia, it was based in the Margraviate of Brandenburg. Its capital was Berlin.