Aghstafa (Azerbaijani:Ağstafacay; Armenian:Աղստև – Aghstev, Russian:Акстафа - Akstafa) is a river in Armenia and Azerbaijan, and is a right tributary of the Kura River.
Aghstev is 133 kilometres (83mi) long with a drainage basin of 2,589 square kilometres (1,000sqmi). Along the river lie the cities of Dilijan, Ijevan, Gazakh and Aghstafa.