| Zestoa | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Zestoa within the Basque Country |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gipuzkoa |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Urola Kosta |
| Area Total Km2: | 43.69 |
| Elevation Footnotes: | (AMSL) |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST (GMT +2) |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 20740 |
| Area Code: | +34 (Spain) + 94 (Biscay) |
Zestoa (Spanish; Castilian: Cestona) is a town located in the province of Gipuzkoa, in the autonomous community of the Basque Country, northern Spain.