| Official Name: | Ribera Baja / Erribera Beitia |
| Settlement Type: | Municipality |
| Seal Size: | 75 |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Ribera Baja/Erribera Beitia within the Basque Country |
| Coordinates: | 42.7398°N -2.8913°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Araba/Álava |
| Subdivision Type3: | Eskualdea / Comarca |
| Subdivision Name3: | Añana |
| Leader Title: | Mayor |
| Leader Name: | Pedro Montoya Ruiz |
| Area Total Km2: | 119.78 |
| Elevation M: | 545 |
| Postal Code Type: | Postal code |
| Postal Code: | 01420 |
Ribera Baja in Spanish or Erribera Beitia in Basque (also alternative Erriberabeitia) is a town and municipality located in the province of Álava, in the Basque Country, northern Spain. It has a population of 1359 inhabitants.[1]
Rivabellosa is the capital and main town of the municipality. It has more than 80% of the municipal population. Rivabellosa is also the capital of the region of Alava called Cuadrilla de Añana.[2]