| Sant'Anna Arresi | |
| Official Name: | Comune di Sant'Anna Arresi |
| Native Name: | Arresi |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 39.0039°N 8.6428°W |
| Region: | Sardinia |
| Province: | South Sardinia |
| Frazioni: | Porto Pino, Is Pillonis, Is Cinus |
| Mayor: | Teresa Pintus |
| Area Total Km2: | 36.7 |
| Population Footnotes: | [1] |
| Population Total: | 2743 |
| Population As Of: | 30 November 2015 |
| Population Demonym: | Arresini |
| Elevation M: | 77 |
| Saint: | St. Anne |
| Day: | 26 July |
| Postal Code: | 09010 |
| Area Code: | 0781 |
Sant'Anna Arresi (Arresi in the Sardinian language) is a comune (municipality) in the Province of South Sardinia in the Italian region of Sardinia, located about 45km (28miles) southwest of Cagliari and about 20km (10miles) southeast of Carbonia.
Sant'Anna Arresi borders the municipalities of Masainas and Teulada.
The frazione of Porto Pino has a spotless beach that stretches for almost 2km (01miles) with dunes that can reach as high as 29m (95feet). As its name suggests, the importance of this area from a naturalistic point of view comes from the presence of the Aleppo pine, which is present in a dense wood of about 90ha. As well as the pines, squat and Phoenician juniper can be found all around. There are also rare kermes oaks, which, in their bushy state, are found only in very few places on the island.
The wetland at the back of the beach is home to numerous species of birds, including cormorants, green cormorants and shags.
Ai confini tra Sardegna e Jazz is an international music festival. It is held in the first week of August/first week of September.