Plesná was formerly part of the German Empire. In the German Empire, the place was called Pleßna.
The place is now called Plesná (Ostrava-Plesná) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Plessna | Austro-Hungary | Wagstadt | before the Treaty of Saint-Germain |
| Plesná | Austro-Hungary | Wagstadt | before the Treaty of Saint-Germain |
| Plesná | Czechoslovakia | Bílovec | after the Treaty of Saint-Germain |
| Pleßna | German Empire | Wagstadt | 1938 |
| Plesná | Czechoslovakia | Hlučín | 1945 |
| Plesná (Ostrava-Plesná) | Czechoslovakia | Ostrava-město | 1992 |
| Plesná (Ostrava-Plesná) | Czech Republic | Ostrava-město | 1993 |