| Cioiana | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Gorj County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Țicleni |
| Length: | 26km (16miles) |
| Mouth: | Jiu |
| Mouth Location: | Peșteana-Jiu |
| Mouth Coordinates: | 44.8422°N 23.295°W |
| Basin Size: | 179km2 |
| Tributaries Right: | Brătuia, Lumedia, Valea Mare |
The Cioiana is a left tributary of the river Jiu in Romania. It discharges into the Jiu in Peșteana-Jiu.[1] Its length is 26km (16miles) and its basin size is 179km2.