| Jiu | |
| Map: | Raul Jiu.png |
| Map Size: | 270 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Type3: | Cities |
| Length: | 340km (210miles) |
| Depth Max: | 120 m (393 ft) (Craiova) |
| Discharge1 Location: | mouth |
| Discharge1 Avg: | 86m3/s |
| Source1: | Confluence of headwaters Jiul de Vest and Jiul de Est, near PetroČani, Hunedoara |
| Source1 Coordinates: | 45.3686°N 23.3678°W |
| Source1 Elevation: | 554m (1,818feet) |
| Mouth: | Danube |
| Mouth Location: | near Bechet, Dolj |
| Mouth Coordinates: | 43.7781°N 23.8133°W |
| Basin Size: | 10080km2 |
| Tributaries Left: | Jiul de Est, Gilort, Amaradia |
| Tributaries Right: | Jiul de Vest, Motru |
The Jiu (pronounced as /ro/; hu|Zsil pronounced as /hu/; de|Schil or Schiel; la|Rabon) is a river in southern Romania. It is formed near PetroČani by the confluence of headwaters Jiul de Vest and Jiul de Est.
It flows southward through the Romanian counties Hunedoara, Gorj, and Dolj before flowing into the Danube near ZÄval,[1] a few kilometers upstream from the Bulgarian city of Oryahovo. It is long, including its source river, Jiul de Vest. It has a basin of 10430km2.[2] Its average discharge at the mouth is .
The upper Jiu Valley, around PetroČani and Lupeni, is Romania's principal coal mining region.
The following towns are situated along the Jiu, from source to mouth: PetroČani (Jiul de Est), Lupeni (Jiul de Vest), BumbeČti-Jiu, Târgu Jiu, Turceni, FiliaČi, and Craiova.
The following rivers are tributaries of the Jiu (from source to mouth):
