Sveti Martin pri Slovenjem Gradcu is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Windischgraz/Slovenji Gradec.
Sveti Martin pri Slovenjem Gradcu was formerly part of the German Empire. In the German Empire, the place was called Hartenstein. The place is now called Šmartno and belongs to Slovenia.