| Pasur River | |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location in Bangladesh |
| Subdivision Type1: | Country |
| Subdivision Name1: | Bangladesh |
| Subdivision Type2: | Division |
| Subdivision Name2: | Khulna Division |
| Subdivision Type3: | District |
| Subdivision Name3: | Khulna, Bagerhat |
| Source1: | Rupsha River |
| Mouth: | Bay of Bengal |
The Pasur is a river in southwestern Bangladesh and a distributary of the Ganges. It continues the Rupsa River. All the distributaries of the Pasur are tidal.[1] It meets the Shibsa River in the Sundarbans. Near the sea, it becomes the Kunga River.[2] The Pasur is the deepest river in Bangladesh.
It is home to Sundarbans Firefly Sanctuary, a wildlife sanctuary for regional wildlife, including the Bengal tiger.