Tartaro-Canalbianco-Po di Levante (Latin: Tartarus[1][2]) is a river of north-east Italy.

The second part of its course, whose length is 78 kilometres (48 mi) from Torretta to Volta Grimana, flows in the province of Rovigo and is known by the name of Canalbianco or Canal Bianco (meaning White Canal in both Italian and Venetian).

The third and final part of its course, whose length is 17 kilometres (11 mi) from Volta Grimana to mouth, flows in the province of Rovigo and is known by the name of Po di Levante (meaning Eastern Po).

The river rises from resurgences in the hills to the southeast of the Lago di Garda and its former lower course had roughly followed what is currently the lower course of the Adigetto Canal until the breach at Pinzone in the 10th century.

After the Malopera breach in 1438 the Tartaro overflowed and new embankments were built, roughly following the previous natural course; this part of the river has been known by the name of Canalbianco since the canalization of its stream.