Katharein is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Troppau.
Katharein was formerly part of the German Empire. In the German Empire, the place was called Katharein (Troppau-Katharein). The place is now called Kateřinky (Opava-Kateřinky) and belongs to Czech Republic.