| Oanțu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Neamț |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Oanțu |
| Length: | 14km (09miles) |
| Source1: | Tarcău Mountains |
| Mouth: | Bistrița |
| Mouth Location: | Pângărați Reservoir |
| Mouth Coordinates: | 46.9178°N 26.1939°W |
| Basin Size: | 40km2 |
| Tributaries Left: | Pârâul Radului |
The Oanțu is a right tributary of the river Bistrița in Romania.[1] It discharges into the Pângărați Reservoir near the village Oanțu.[2] Its length is 14km (09miles) and its basin size is 40km2.