| Arén | |
| Settlement Type: | Municipality |
| Official Name: | Arén (Spanish) |
| Native Name: | Areny de Noguera (Ribagorçan) Arén de Noguera (Aragonese) |
| Pushpin Map: | Spain Aragon#Spain |
| Pushpin Map Caption: | Location of Arén/Areny de Noguera within Aragon##Location of Arén/Areny de Noguera within Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Huesca |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Ribagorza |
| Subdivision Type4: | Judicial district |
| Subdivision Name4: | Barbastro |
| Coordinates: | 42.2667°N 44°W |
| Elevation M: | 709 |
| Area Total Km2: | 119 |
| Population Demonym: | Arenense |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 22583 |
| Area Code Type: | Dialing code |
| Leader Title: | Alcalde |
| Leader Name: | Maria Asunción Codina Marcet |
| Leader Party: | PSOE |
Arén (pronounced as /es/), in Catalan: Areny de Noguera[1] (in Catalan; Valencian aˈɾeɲ de noˈɣeɾɛ/), or in Aragonese: Arén de Noguera, is a municipality located in the province of Huesca, Aragon, Spain. According to the 2018 census (INE), the municipality has a population of 318 inhabitants.
These include uninhabited villages: