| A Illa de Arousa | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Pontevedra |
| Subdivision Type3: | Comarca |
| Seat Type: | Capital |
| Coordinates: | 42.5544°N -8.8639°W |
| Elevation M: | 9 |
| Area Total Km2: | 7 |
| Population Demonym: | Arousán, á |
| 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: | 36626 |
| Area Code Type: | Dialing code |
| Leader Title: | Alcalde |
| Leader Name: | Luis Arosa García |
| Leader Party: | PSdeG-PSOE ; government alliance with BNG |
| Website: | http://www.ailladearousa.es/ |
A Illa de Arousa is the only island municipality in Galicia, Spain in the province of Pontevedra. It is located in the heart of the Ria de Arousa. According to 2021 INE the island's population was 4,951 inhabitants. The population is divided into several neighborhoods, and places of interest are the lighthouse's environment, the island of Areoso (close to the Illa de Arousa) and Carreirón Natural Park, which is listed as a special protection zone for heron birds populations among other birds that inhabit the island. The Holy viewpoint is the highest point on the island. "San Xulián da Illa de Arousa" is the only parish in this island. Some of its beaches are the following ones: A Area da Secada, A Lavanqueira, O Vao, Camaxe, Carreirón, Espiñeiro and O Cabodeiro.
A Illa de Arousa has five ports. Xufre is the most important and the other important docks include O Campo, Chazo and Cabodeiro.
According to E. Bascuas, "Arousa", registered as insulam Arauza in 899, would belong to the old European hydronymy, and is derived from the Indoeuropean root *er- 'flow, move'.[1]