| Official Name: | Ansó, Spain |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Aragon |
| Subdivision Type2: | Province |
| Subdivision Name2: | Huesca |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Ansó |
| Area Total Km2: | 224 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
Ansó is a town and municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census (INE), the municipality had a population of 523 inhabitants. The municipality includes the towns of Ansó and Fago (7 km. apart).
The municipality includes the whole valle de Ansó in the Pyrenees. Ansó is on the left side of the Veral river, which descends from mountains that are more than 2,000 metres high.