Areso is a town and municipality in the province and autonomous community of Navarre, in northern Spain. It is one of the many small municipalities that make up the rural landscape of this part of the country.
Navarre is an autonomous community in northern Spain, bordering France to the north, and Areso lies within its administrative territory. As a municipality, Areso holds the status of a local administrative unit, with its own municipal government.
Like many towns in this region, Areso is situated in the mountainous and green terrain characteristic of northern Navarre. The area is part of the broader Basque cultural and linguistic region, though the town itself is officially within Navarre.