| Official Name: | Williamsville, Mississippi |
| Pushpin Map: | Mississippi#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Mississippi |
| Subdivision Type2: | County |
| Subdivision Name2: | Attala |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 128 |
| Elevation Ft: | 420 |
| Coordinates: | 33.0267°N -89.5669°W |
| Postal Code Type: | ZIP code |
| Area Code: | 662 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 679727 |
Williamsville is an unincorporated community in Attala County, Mississippi, United States. Williamsville is located near Mississippi Highway 19 and is approximately 2.4miles southeast of Kosciusko.