The Jiul de Est ("Eastern Jiu", previously also known as ) is a headwater of the river Jiu in Romania. Its source is in the ÃÂureanu Mountains. At its confluence with the Jiul de Vest in Iscroni, the Jiu is formed. Its length is and its basin size is .
means "the Jiu" (with the definite article ).
The following rivers are tributaries to the river Jiul de Est: