Drnovec was formerly part of the German Empire. In the German Empire, the place was called Kleingrün.
The place is now called Drnovec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kleingrün | Austro-Hungary | Gabel | before the Treaty of Saint-Germain |
| Malý Grün | Czechoslovakia | Německé Jablonné | after the Treaty of Saint-Germain |
| Kleingrün | Czechoslovakia | Německé Jablonné | after the Treaty of Saint-Germain |
| Kleingrün | German Empire | Deutsch Gabel | 1938 |
| Drnovec | Czechoslovakia | Nový Bor | 1945 |
| Drnovec | Czechoslovakia | Česká Lípa | 1992 |
| Drnovec | Czech Republic | Česká Lípa | 1993 |