Kobilnik was formerly part of the German Empire. In the German Empire, the place was called Kobilníky.
The place is now called Kobylníky and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kobilnik | Austro-Hungary | Schlan | before the Treaty of Saint-Germain |
| Kobylníky | Austro-Hungary | Schlan | before the Treaty of Saint-Germain |
| Kobylníky | Czechoslovakia | Slaný | after the Treaty of Saint-Germain |
| Kobilnik | German Empire | Schlan | 1939 |
| Kobilníky | German Empire | Schlan | 1939 |
| Kobylníky | Czechoslovakia | Slaný | 1945 |
| Kobylníky | Czechoslovakia | Kladno | 1992 |
| Kobylníky | Czech Republic | Kladno | 1993 |