| Official Name: | Williamstown, Vermont |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Vermont#USA |
| Pushpin Label: | Williamstown |
| Coordinates: | 44.1217°N -72.5411°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Vermont |
| Subdivision Type2: | County |
| Subdivision Name2: | Orange |
| Subdivision Type3: | Town |
| Subdivision Name3: | Williamstown |
| Area Footnotes: | [1] |
| Area Total Km2: | 8.71 |
| Area Land Km2: | 8.69 |
| Area Water Km2: | 0.02 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population: | 1264 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 872 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 05679 |
| Area Code: | 802 |
| Blank Name: | FIPS code |
| Blank Info: | 50-84100 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2586660 |
Williamstown is the primary village and a census-designated place (CDP) in the town of Williamstown, Orange County, Vermont, United States. As of the 2020 census, it had a population of 1,264,[2] out of 3,515 in the entire town of Williamstown.
The CDP is in northwestern Orange County, in the north-central part of the town of Williamstown. It is in the valley of the Stevens Branch of the Winooski River, part of the Lake Champlain watershed. Vermont Route 14 passes through the village center, leading north 6miles to Barre and south through Williamstown Gulf to South Royalton in the White River Valley. Vermont Route 64 leads west from Williamstown village 4miles to Interstate 89.