Aquidabán River should not be confused with Aquidabã River (disambiguation).
| Aquidabán River | |
| Source1 Coordinates: | -22.8971°N -55.713°W |
| Mouth Coordinates: | -23.1108°N -57.6211°W |
| Subdivision Type1: | Country |
| Length: | 250 km |
The Aquidabán River (Spanish: Río Aquidabán) is a river in the Amambay Department, in northeastern Paraguay. It is a tributary of the larger Paraguay River. Its headwaters start in the Amambai Mountains, and the river flows east-to-west to eventually merge into the Paraguay River just north of Concepción.