Łączyno Nowe was formerly part of the German Empire. In the German Empire, the place was called Laczyno Nowe.
The place is now called Łączyno Nowe and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Laczyno Nowe | Russian Empire | Prasnyš | 1914 |
| Łączyno Nowe | Poland | Przasnysz | 1919 |
| Laczyno Nowe | German Empire | Praschnitz | 1939 |
| Łączyno Nowe | Poland | Przasnysz | 1945 |
| Łączyno Nowe | Poland | Ciechanów | 1992 |