| Benasau | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Valencian Community |
| Pushpin Map Caption: | Location within the Valencian Community |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Alicante |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Comtat |
| Subdivision Type4: | Judicial district |
| Subdivision Name4: | Alcoi |
| Coordinates: | 38.6897°N -0.3433°W |
| Elevation M: | 701 |
| Area Total Km2: | 9.04 |
| Population Demonym: | Benasauer, Benasauera |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Blank Info Sec1: | Valencian |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 03814 |
| Area Code Type: | Dialing code |
| Leader Title: | Alcalde |
| Leader Name: | Nieves Mas Gadea (2007) |
| Leader Party: | PSOE |
Benasau (benaˈzaw/; pronounced as /es/) is a municipality in the comarca of Comtat in the Valencian Community, Spain.