| Jiul de Vest | |
| Name Other: | Jiul Românesc, Câmpușelu |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Hunedoara County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Câmpu lui Neag, Uricani, Lupeni, Vulcan |
| Length: | 54km (34miles) |
| Source1 Location: | near the Jiu-Cerna Pass |
| Source1 Coordinates: | 45.2769°N 22.823°W |
| Mouth: | Jiu |
| Mouth Location: | Iscroni |
| Mouth Coordinates: | 45.3686°N 23.3678°W |
| Mouth Elevation: | 554m (1,818feet) |
| Basin Size: | 496km2 |
The Jiul de Vest ("Western Jiu", previously also known as Romanian; Moldavian; Moldovan: Jiul Românesc) is a headwater of the river Jiu in Romania. At its confluence with the Jiul de Est in Iscroni, the Jiu is formed.[1] Its length is 54km (34miles) and its basin size is 496km2. The upper course of the river is also known locally as Romanian; Moldavian; Moldovan: Câmpușelu.
Romanian; Moldavian; Moldovan: Jiul simply means "the Jiu", appended by the definite article .
The following rivers are tributaries to the river Jiul de Vest (from source to mouth):