Dora Baltea (Italian: [ˈdɔːra ˈbaltea]) or Doire Baltée (French: [dwaʁ balte]) (Latin: Duria maior or Duria Bautica; Arpitan: Djouire (Valdôtain); Piemontese: Deura Bàotia), is a river in northern Italy. It is a left-hand tributary of the Po River and is about 170 kilometres (110 mi) long.