| Azul River | |
| Pushpin Map: | Brazil |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth in Brazil |
| Pushpin Map Alt: | Map showing the location of the river mouth in Brazil |
| Source1 Location: | Paraná state |
| Subdivision Type1: | Country |
| Mouth: | Piquiri River |
| Mouth Coordinates: | -24.1883°N -53.7481°W |
The Azul River is a river of Paraná state in southern Brazil. It is a tributary of the Piquiri River, which in turn is a Paraná River tributary.