Kotlin was formerly part of the German Empire. In the German Empire, the place was called Kesseltal.
The place is now called Kotlin and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kotlin | German Empire | Jarotschin | before the Versailles Treaty |
| Kotlin | Poland | Jarocin | after the Versailles Treaty |
| Kotlin | German Empire | Jarotschin | 1939 |
| Kottlau | German Empire | Jarotschin | 1939 |
| Kesseltal | German Empire | Jarotschin | 1939 |
| Kotlin | Poland | Jarocin | 1945 |
| Kotlin | Poland | Kalisz | 1992 |