| Official Name: | Castigaleu |
| Subdivision Name3: | Castigaleu |
| Area Total Km2: | 26 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Website: | Web de Castigaleu https://www.castigaleu.com |
Castigaleu (pronounced as /es/; pronounced as /ca/) is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 115 inhabitants.