The Pededze (Estonian: Pedetsi jõgi) is a river in Latvia and Estonia. It has a length of 159 km (99 mi) of which in Latvia 131 km and in Estonia 26 km. It flows generally south. It is a right tributary of the Aiviekste, the source of Pededze is Lake Kirikumäe in the Haanja Uplands in Vastseliina Parish, Võru County, Estonia.