| Aizarnazabal | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Aizarnazabal within the Basque Autonomous Community |
| Pushpin Map1: | Spain |
| Pushpin Map Caption1: | Location of Aizarnazabal within Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gipuzkoa |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Urola Kosta |
| Coordinates: | 43.2558°N -2.2364°W |
| Elevation M: | 58 |
| Area Total Km2: | 6.55 |
| Established Title: | Founded |
| Population Demonym: | Basque: aizarnazabaldarra |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 20280 |
| Area Code Type: | Dialing code |
| Leader Title: | Mayor |
| Leader Name: | María Carmen Arregi Agirre |
| Leader Party: | EH Bildu |
Aizarnazabal is a town located in the province of Gipuzkoa, in the autonomous community of Basque Country, in the north of Spain. As of 2014 it had a total population of 775 inhabitants.