Locations
| Title | Other names | Type | View |
|---|---|---|---|
| Smolensk Province | – | Province | ℹ |
| Stavropol | – | City | ℹ |
| Stavropol Krai | – | Krai | ℹ |
| Surazh County | bel. Суражскі | County | ℹ |
| Surazh | bel. Сураж | City | ℹ |
| Suwałki | – | City | ℹ |
| Tallinn | – | City | ℹ |
| Talsi | latv. Talsi | City | ℹ |
| Tambov Governorate | – | Governorate | ℹ |
| Tartu | est. Tartu | City | ℹ |
| Taurida Governorate | – | Governorate | ℹ |
| Telšiai | lith. Telšiai | City | ℹ |
| Trakai | lith. Trakai | City | ℹ |
| Tukums | latv. Tukums | City | ℹ |
| Tula Governorate | – | Governorate | ℹ |
| Tver Governorate | – | Governorate | ℹ |
| Ufa Governorate | – | Governorate | ℹ |
| Ukmergė | lith. Ukmergė | City | ℹ |
| Union of Soviet Socialist Republics | – | Nation | ℹ |
| United Baltic Duchy | – | State Entity | ℹ |