Spodnji Leskovec was formerly part of the German Empire. In the German Empire, the place was called Unterhaslach.
The place is now called Spodnji Leskovec and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Leskovetz | Austro-Hungary | Pettau/Ptuj | before the Treaty of Saint-Germain |
| Spodnji Leskovec | Austro-Hungary | Pettau/Ptuj | before the Treaty of Saint-Germain |
| Spodnji Leskovec | Yugoslavia | Ptuj | after the Treaty of Saint-Germain |
| Unterhaslach | German Empire | Pettau | 1941 |
| Spodnji Leskovec | Yugoslavia | Ptuj | 1945 |
| Spodnji Leskovec | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Spodnji Leskovec | Slovenia | Slowenien | 1991 |