| Official Name: | Charlestown, Rhode Island |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Rhode Island#USA |
| Pushpin Label: | Charlestown |
| Coordinates: | 41.3819°N -71.6406°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Rhode Island |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Subdivision Type3: | Towns |
| Subdivision Name3: | Charlestown South Kingstown |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 2.84 |
| Area Land Sq Mi: | 2.26 |
| Area Water Sq Mi: | 0.57 |
| Area Total Km2: | 7.35 |
| Area Land Km2: | 5.86 |
| Area Water Km2: | 1.49 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Density Km2: | 292.42 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 22 |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 02813 (Charlestown) 02879 (Wakefield) |
| Area Code: | 401 |
| Blank Name: | FIPS code |
| Blank Info: | 44-14320 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2631329 |
| Population Total: | 1714 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 757.40 |
Charlestown is a census-designated place (CDP) in Washington County, Rhode Island, United States, comprising the main village in the town of Charlestown and additional land extending to the east into the town of South Kingstown. It was first listed as a CDP prior to the 2020 census.
Charlestown is in southern Washington County, on the north side of Ninigret Pond, a tidal lagoon connected to Block Island Sound. The community is in the southeast part of the town of Charlestown and the southwest part of the town of South Kingstown. The village of Charlestown is in the northwest part of the CDP, at the northern head of Ninigret Pond. The hamlet of Charlestown Beach is in the southern part of the CDP, separated by a tidal inlet from the physical Charlestown Beach along the Atlantic. The CDP continues east into South Kingstown, on the north side of Green Hill Pond.
U.S. Route 1 forms the northern edge of the Charlestown CDP; the highway leads northeast 10miles to Narragansett and west 11miles to Westerly.