| Big Sandy | |
| Settlement Type: | Census-designated place (CDP) |
| Pushpin Map: | West Virginia |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location within the state of West Virginia |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | West Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | McDowell |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.553 |
| Area Land Sq Mi: | 0.532 |
| Area Water Sq Mi: | 0.021 |
| Population As Of: | 2010 |
| Population Footnotes: | [2] |
| Population Total: | 168 |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 37.4642°N -81.6981°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
Big Sandy is a census-designated place (CDP) located in McDowell County, West Virginia, United States. As of the 2010 census, its population is 168. The town's name comes from the Big Sandy River, a major tributary of the Ohio River which forms the boundary between West Virginia and Kentucky.