| Official Name: | Oak Bluffs, Massachusetts |
| Settlement Type: | Census-designated place |
| Pushpin Label: | Oak Bluffs |
| Pushpin Label Position: | right |
| Coordinates: | 41.4547°N -70.5586°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | Massachusetts |
| Subdivision Type2: | County |
| Subdivision Name2: | Dukes |
| Subdivision Type3: | Town |
| Subdivision Name3: | Oak Bluffs |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 1.91 |
| Area Land Sq Mi: | 1.81 |
| Area Water Sq Mi: | 0.10 |
| Area Total Km2: | 4.94 |
| Area Land Km2: | 4.69 |
| Area Water Km2: | 0.25 |
| Population As Of: | 2020 |
| Population Density Km2: | 495.60 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 16 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 02557 |
| Area Code: | 508/774 |
| Blank Name: | FIPS code |
| Blank Info: | 25-50425 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806312 |
| Population Total: | 2324 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 1283.27 |
Oak Bluffs is a census-designated place (CDP) in the town of Oak Bluffs, Dukes County, Massachusetts, United States, on the island of Martha's Vineyard. The Oak Bluffs CDP comprises the most densely settled part of the town, including the neighborhoods of Vineyard Highlands, Harthaven, and part of Eastville.
Oak Bluffs was first listed as a CDP prior to the 2020 census with a population of 2,324.[2]
| White alone (NH) | 1,672 | 71.94% | |
| Black or African American alone (NH) | 201 | 8.65% | |
| Native American or Alaska Native alone (NH) | 32 | 1.38% | |
| Asian alone (NH) | 31 | 1.33% | |
| Pacific Islander alone (NH) | 4 | 0.17% | |
| Other race alone (NH) | 77 | 3.31% | |
| Mixed race or Multiracial (NH) | 232 | 9.98% | |
| Hispanic or Latino (any race) | 75 | 3.23% | |
| Total | 2,324 | 100.00% |