The Baztan (Basque: Baztan, Spanish: Baztán) is a river in northern Spain. It is the main, right headwater of the river Bidasoa. Downstream from the confluence with the river Marin at Oronoz-Mugairi, it is called Bidasoa.
| Baztan Baztán | |
|---|---|
 The Baztan in Elizondo | |
| Location | |
| Country | Spain |
| Region | Navarre |
| Physical characteristics | |
| Source | Izpegi & Iztauz |
| • location | Erratzu, Spain |
| Mouth | Bidasoa |
• location | Oronoz-Mugairi |
• coordinates | 43°08′16″N 1°36′44″W / 43.1378°N 1.6121°W |