| Official Name: | Castellar de la Muela |
| Pushpin Map: | Spain Province of Guadalajara#Spain Castilla-La Mancha#Spain |
| Pushpin Map Caption: | Location in Spain. |
| Subdivision Name3: | Señorío de Molina - Alto Tajo |
| Leader Title: | Mayor |
| Leader Name: | Manuel Mingote Torres |
| Area Total Km2: | 21.38 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Coordinates: | 40.8189°N -1.7594°W |
Castellar de la Muela is a municipality located in the province of Guadalajara, Castile-La Mancha, Spain.