| Orba Co | |
| Location: | Rutog County, Ngari Prefecture, Tibet Autonomous Region |
| Coordinates: | 34.5456°N 81.0392°W |
| Type: | Lake |
| Elevation: | 5209m (17,090feet) |
| Islands: | Four |
| Pushpin Map: | China Tibet Ngari |
| Pushpin Map Alt: | Location of lake in Tibet |
Orba Co, also Wo Erba or Wo Erbacuo (;), is a lake in Rutog County in the Ngari Prefecture in the northwest of the Tibet Autonomous Region of China. It lies at an elevation of 5209m (17,090feet), to the southeast of Longmu Lake.