Proschwitz an der Neiße is a place, that after the Treaty of Saint-Germain belonged to Czechoslovakia and was situated in the administrative region Jablonec nad Nisou.
Proschwitz an der Neiße 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.