Hinter-Ehrensdorf is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Mährisch-Trübau.
Hinter-Ehrensdorf was formerly part of the German Empire. In the German Empire, the place was called Hinter Ehrnsdorf. The place is now called Zadní Arnoštov and belongs to Czech Republic.