Nieder-Nemaus is a place, that after the Treaty of Saint-Germain belonged to Czechoslovakia and was situated in the administrative region Dvůr Králové nad Labem.
Nieder-Nemaus was formerly part of the German Empire. In the German Empire, the place was called Niederemaus. The place is now called -Dolní Nemojov (Nemojov-) and belongs to Czech Republic.