| Dolu River ডলু নদী | |
| Source1 Location: | Tonkabati |
| Mouth Location: | Sangu River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Bangladesh |
| Subdivision Type2: | Districts |
| Discharge1 Avg: | Annual average |
| River System: | Hillside River System |
The Dolu (Bengali: ডলু) is a local river in part of Sangu River Bangladesh. Dolu River or Tangkabati River is a river in the eastern hills of Bandarban and Chittagong Districts. The length of the river is 53 kilometers, the average width is 16 meters, and the nature of the river is spiral. The Bangladesh Water Development Board gave the name Dalu.[1] [2] [3] [4]