| Idiazabal | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Idiazabal within the Basque Autonomous Community |
| Pushpin Map1: | Spain |
| Pushpin Map Caption1: | Location of Idiazabal within Spain |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gipuzkoa |
| Subdivision Type3: | Eskualdea |
| Subdivision Name3: | Goierri |
| Coordinates: | 43.0106°N -2.2336°W |
| Elevation M: | 210 |
| Area Total Km2: | 29.47 |
| Established Title: | Founded |
| Population Demonym: | eu|idiazabaldar |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 20213 |
| Area Code Type: | Dialing code |
| Leader Title: | Mayor |
| Leader Name: | Iñaki Alberdi |
| Leader Party: | EH Bildu |
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.
The area has given its name to the renowned Idiazabal cheese of the region, one of the best-known products of the Basque cuisine.