Třebom was formerly part of the German Empire. In the German Empire, the place was called Thröm.
The place is now called Třebom and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Thröm | German Empire | Ratibor | before the Versailles Treaty |
| Třebom | Czechoslovakia | Hlučín | after the Versailles Treaty |
| Thröm | German Empire | Ratibor (mit Hultschiner Land) | 1939 |
| Třebom | Czechoslovakia | Hlučín | 1945 |
| Třebom | Czechoslovakia | Opava | 1992 |
| Třebom | Czech Republic | Opava | 1993 |