| Official Name: | Barrundia |
| Settlement Type: | Municipality |
| Government Type: | Ayuntamiento |
| Leader Title: | Mayor |
| Leader Name: | Igor Medina Isasa |
| Area Total Km2: | 97.43 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 01206, 01208 |
Barrundia is a valley and municipality located in the province of Álava, in the Basque Country, northern Spain. It includes the village of Guevara (Gebara). Ozaeta is the capital. A stream of the same name runs through the valley, pouring into the Ullíbarri-Gamboa reservoir.