| Madidi River | |
| Map: | Madeirarivermap.jpg |
| Map Size: | 300 |
| Pushpin Map Size: | 300 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Bolivia |
| Length: | 350km (220miles)[1] |
| Source1 Location: | Bolivia |
| Source1 Elevation: | 1060m (3,480feet) |
| Mouth: | Beni River |
| Mouth Location: | Bolivia |
| Mouth Coordinates: | -12.5661°N -66.9644°W |
| Mouth Elevation: | 159m (522feet) |
Madidi (pronounced as /es/) is a river located in the La Paz Department of Bolivia. It is a tributary of the Beni River and a part of the Amazon Basin. It runs through the Madidi National Park.