Jarnołtówek was formerly part of the German Empire. In the German Empire, the place was called Arnoldsdorf.
The place is now called Jarnołtówek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Arnoldsdorf | German Empire | Neisse | 1939 |
| Jarnołtówek | Under Polish administration | Nysa | 1945 |
| Jarnołtówek | Poland | Opole | 1992 |