Valle de Yerri (also known as Deierri) is a town and municipality in the province and autonomous community of Navarre, in northern Spain. It lies within the Navarre region, which is located in the country's north, bordering France.
The municipality is known by two names, reflecting the region's bilingual Basque and Spanish heritage: "Valle de Yerri" in Spanish and "Deierri" in Basque. This dual naming is characteristic of many municipalities in Navarre, where both languages have official or traditional standing.
As a municipality, Valle de Yerri encompasses both the town itself and the surrounding area under a single local administration, a common structure in rural Navarre.