Proschwitz is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Gablonz a. d. Neiße.
Proschwitz was formerly part of the German Empire. In the German Empire, the place was called Proschwitz an der Neiße. The place is now called Proseč nad Nisou (Jablonec-Proseč) and belongs to Czech Republic.