| Type: | municipality |
| Native Name: | Catalan; Valencian: Val de Lierp (Ribagorçan) |
| Area Total Km2: | 32 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Valle de Lierp (pronounced as /es/), in Ribagorçan and Aragonese: Val de Lierp, is a municipality located in the province of Huesca, in Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 49 inhabitants.