| Official Name: | Casillas |
| Type: | municipality |
| Pushpin Map: | Spain Castile and León#Spain |
| Pushpin Map Caption: | Location in Spain. |
| Subdivision Name3: | Casillas |
| Area Total Km2: | 11.96 |
| Elevation M: | 1.012 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Casillas is a municipality of Spain in Ávila, autonomous community Castile and León.
It has a surface area of 11.96 km² with a population of 815 inhabitants and a density of 68.14 inhabitants per km².