| Official Name: | Angostura, South Dakota |
| Settlement Type: | Census-designated place |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Angostura |
| Coordinates: | 43.3192°N -103.3861°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Fall River |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 12.61 |
| Area Land Sq Mi: | 12.59 |
| Area Water Sq Mi: | 0.02 |
| Area Total Km2: | 32.65 |
| Area Land Km2: | 32.60 |
| Area Water Km2: | 0.05 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Density Km2: | 4.88 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3301 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 57747 (Hot Springs) |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-01560 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2807102 |
| Population Total: | 159 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 12.63 |
Angostura is an unincorporated area and census-designated place (CDP) in Fall River County, South Dakota, United States. The population was 159 at the 2020 census.[3]
It is northeast of the center of the county, between U.S. Routes 18/385 to the northeast and Angostura Reservoir to the southwest. Residential development is primarily in the Angostura Heights area in the southern part of the CDP. The shoreline area next to the reservoir is part of the state-managed Angostura Recreation Area.
The community is southeast of Hot Springs and northwest of Oelrichs.