The Wipper is a river in Thuringia, Germany, left tributary of the Unstrut. It originates in the Eichsfeld area, northwestern Thuringia, near Leinefelde-Worbis. The total length of the Wipper is 95 km. The Wipper joins the Unstrut near Heldrungen. Towns along the Wipper include Bleicherode and Sondershausen.