Kildajny was formerly part of the German Empire. In the German Empire, the place was called Kildehnen.
The place is now called Kildajny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kildehnen | German Empire | Heiligenbeil | 1939 |
| Kildajny | Under Polish administration | Braniewo | 1945 |
| Kildajny | Poland | Elbląg | 1992 |