| Official Name: | Eureka, West Virginia |
| Pushpin Map: | West Virginia#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | West Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Pleasants |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 636 |
| Coordinates: | 39.3725°N -81.2808°W |
| Area Code: | 304 & 681 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1551067 |
Eureka is an unincorporated community in Pleasants County, West Virginia, United States. Eureka is located on the banks of the Ohio River and West Virginia Route 2, 1miles west-southwest of Belmont.[1] Eureka had a post office, which closed on January 16, 1993.[2]
The community was named Eureka after oil was discovered in the area.[3]