The Vanji language, also spelt Vanchi and Vanži, is an extinct Iranian language, one of the areal group of Pamir languages. It was spoken in the Vanj River valley in what is now the Gorno-Badakhshan Autonomous Region of Tajikistan. In the 19th century the region was forcibly annexed to the Bukharan Emirate and a campaign of violent assimilation undertaken, and by the end of the 19th century, the Vanji language had completely disappeared, displaced by Tajik Persian as a result of assimilation.