| Castle of Alegrete | |
|---|---|
Castelo de Alegrete | |
Portalegre, Alto Alentejo, Alentejo in  Portugal | |
 The entrance to the medieval castle of Alegrete | |
| Coordinates | 39°14′13.2″N 7°19′21.1″W / 39.237000°N 7.322528°W |
| Type | Castle |
| Site information | |
| Owner | Portuguese Republic |
| Open to the public | Public |
| Site history | |
| Built | 1160 |
The Castle of Alegrete (Portuguese: Castelo de Alegrete) is a Portuguese medieval castle in the civil parish of Alegrete, in the municipality of Portalegre, in the district of the same name.