Sankt Léon was formerly part of the German Empire. In the German Empire, the place was called Sankt Leo.
The place is now called Saint-Léon and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sankt Léon | German Empire | Saarburg | before the Versailles Treaty |
| Leonsberg | German Empire | Saarburg | before the Versailles Treaty |
| Saint-Léon | France | Moselle | after the Versailles Treaty |
| Sankt Leo | German Empire | Saarburg (Westmark) | 1940 |
| Saint-Léon | France | Moselle | 1945 |
| Saint-Léon | France | Moselle | 1993 |