Olszewo was formerly part of the German Empire. In the German Empire, the place was called Struben.
The place is now called Olszewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Olschau | German Empire | Neidenburg | 1938 |
| Struben | German Empire | Neidenburg | 1939 |
| Olszewo | Under Polish administration | Nidzica | 1945 |
| Olszewo | Poland | Olsztyn | 1992 |