Foncea is a municipality in the autonomous community of La Rioja, Spain. It lies in the northeast of the province, near the Montes Obarenes, a mountain range that extends across northern Spain. The municipality forms part of the judicial district of Haro, a town in the same region of La Rioja.
As a municipality, Foncea is one of the small local administrative units that make up La Rioja, a single-province autonomous community in northern Spain. Its position near the Montes Obarenes places it in the northwestern part of the Ebro Valley region, close to the border with the province of Burgos in Castile and León.
Beyond its administrative status and geographic location, few details are recorded about Foncea in the available source material. It is not among the larger or better-known settlements of La Rioja, and its identity is tied to its rural setting in the foothills near the Montes Obarenes and its inclusion in the judicial district of Haro.