Sadłuki was formerly part of the German Empire. In the German Empire, the place was called Sadlacken.
The place is now called Sadłuki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sadluken | German Empire | Stuhm | before the Versailles Treaty |
| Sadluken | German Empire | Stuhm | after the Versailles Treaty |
| Sadluken | German Empire | Stuhm | 1938 |
| Sadlacken | German Empire | Stuhm | 1939 |
| Sadlacken | German Empire | Stuhm | 1939 |
| Sadłuki | Under Polish administration | Sztum | 1945 |
| Sadłuki | Poland | Elbląg | 1992 |