| Oltișor | |
| Name Other: | Criva |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Olt County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Grădiștea, Dranovățu, Găneasa, Oltișoru, Criva de Jos, Ociogi, Greci |
| Length: | 26km (16miles) |
| Source1: | near Cepari |
| Source1 Coordinates: | 44.4856°N 24.1631°W |
| Source1 Elevation: | 207m (679feet) |
| Mouth: | Balta Dascălului |
| Mouth Location: | Osica Forest |
| Mouth Coordinates: | 44.2514°N 24.3722°W |
| Mouth Elevation: | 86m (282feet) |
| Progression: | Balta Dascălului→ |
| Basin Size: | 159km2 |
| Tributaries Right: | Voinicești, Vaslui, Jugălia |
| Custom Label: | River code |
| Custom Data: | VIII.1.173.16.1 |
The Oltișor is a left tributary of the river Balta Dascălului in Romania. It flows into the Balta Dascălului near Cioroiu. Its length is 26km (16miles) and its basin size is 159km2. The upper reach of the river is also known as Criva.