Gashnya
General data
- Name: Gashnya
- Water system: Maritsa (Evros)
- Water type: River
- Progression: Vacha -> Maritsa (Evros) -> Aegean Sea -> Mediterranean Sea -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: Bulgaria
The Gashnya is a 20 km long river in southern Bulgaria, flowing through Pazardzhik and Smolyan Provinces. It is a left tributary of the Vacha, itself a right tributary of the Maritsa.
Its drainage basin covers a territory of 54 km2.
