| Official Name: | Casas del Castañar |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain#Spain Extremadura |
| Pushpin Map Caption: | Location of Casas del Castañar in Spain. |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cáceres |
| Subdivision Type3: | Judicial district |
| Subdivision Name3: | Plasencia |
| Government Footnotes: | [1] |
| Leader Title: | Mayor |
| Leader Name: | María Asunción Calle del Consuelo |
| Area Footnotes: | [2] |
| Area Total Km2: | 24.63 |
| Elevation M: | 675 |
| Population As Of: | 2023 |
| Population Footnotes: | [3] |
| Population Total: | 579 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
Casas del Castañar (pronounced as /es/) is a municipality in the province of Cáceres in Spain, near the Sierra de Gredos mountain range.