Agsu River
                    General data
- Name: Agsu River
 - Water system: Kura
 - Water type: River
 - Progression: Kura -> Caspian Sea -> Planet Earth
 - Climates: Subtropical
 - Continents: Europe
 - Countries: Azerbaijan
 
Agsu River flows through the Agsu District and surrounding areas in east‑Azerbaijan, including parts of Şamaxı and Kürdəmir. It is about 99 km. The river originates in the Lahij Mountains and empties into the Kura River. One major tributary is the Girdimançay.