| Official Name: | Ainzón, Spain |
| Subdivision Name3: | Ainzón |
| Area Total Km2: | 40 |
| Elevation M: | 429 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Pushpin Map: | Spain Aragon#Spain#Europe |
| Coordinates: | 41.8167°N -32°W |
Ainzón is a municipality located in the province of Zaragoza, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 1,229 inhabitants.