Osinovka was formerly part of the German Empire. In the German Empire, the place was called Grünau.
The place is now called Osinovka and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Osseningken | German Empire | Elchniederung | 1931 |
| Grünau | German Empire | Elchniederung | 1939 |
| Grjunau | Under Soviet administration | Kaliningrad | 1945 |
| Osinovka | Russian Federation | Slavsk | 1992 |