Nieder-Dattin is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Teschen/Cieszyn,Český Těšín.
Nieder-Dattin was formerly part of the German Empire. In the German Empire, the place was called Nieder Dattin. The place is now called Dolní Datyně (Havířov-Dolní Datyně) and belongs to Czech Republic.