| Dubna | |
| Source1 Location: | Lake Cārmins, Latvia |
| Source1 Coordinates: | 56.0383°N 27.1732°W |
| Mouth: | Daugava |
| Mouth Location: | Līvāni |
| Mouth Coordinates: | 56.3625°N 26.1619°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Latvia |
| Length: | 105km (65miles) |
| Basin Size: | 2785km2 |
| Tributaries Left: | Kolupe |
| Tributaries Right: | Tartaks, Jaša, Feimanka, Ūša |
The Dubna is a river in eastern Latvia and a right-bank tributary of the Daugava. It joins the Daugava in the town of Līvāni, around 170 kilometers east of Riga, the capital.[1] [2]