Mołtajny was formerly part of the German Empire. In the German Empire, the place was called Molteinen.
The place is now called Mołtajny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Molthainen | German Empire | Gerdauen | 1938 |
| Molteinen | German Empire | Gerdauen | 1939 |
| Mołtajny | Under Polish administration | Kętrzyn | 1945 |
| Mołtajny | Poland | Olsztyn | 1992 |