Idiazabal is a town and municipality in the Goierri region of the province of Gipuzkoa, in the autonomous community of the Basque Country, northern Spain.
It is located in the Goierri, an inland district of Gipuzkoa in the Basque Country. The municipality holds the status of both town and municipality within this region.
The town shares its name with Idiazabal cheese, a well-known Basque sheep's milk cheese, though the source material provided here covers only the town's administrative and geographic identity.