| Budhi Ganga | |
| Progression: | Bajura District and Achham District |
| Subdivision Type1: | Country |
| Subdivision Name1: | Nepal (Seti Zone) |
| Length: | 50km (30miles) |
| Discharge1 Avg: | 70m3/s March: 50m3/s July: 580m3/s |
| Basin Size: | 100km2 |
| River System: | Karnali River |
| Tributaries Left: | Humla Karnali River |
| Tributaries Right: | Seti River |
The Budhi Ganga River is a tributary of the Karnali River in Nepal. The source of this river is Jagadullah lake in the Bajura District of Nepal. Budhi Ganga passes through Achham District, crosses Sanfebagar Municipality in Achham under Seti-Lokmarga Road before continuing beyond Sanfebagar Bazar, through Chitre and along the river bank to meet the Seti River at the border of Achham district and Doti district, before washing out into the Karnali River.