Williamstown is the name of several places in the United States of America:
- Williamstown, Kentucky
- Williamstown, Massachusetts, which is both the name of a Census-Designated Place and a town.
- Williamstown, New Jersey
- Williamstown, New York
- Williamstown, Pennsylvania
- Williamstown, Vermont
- Williamstown, West Virginia
- Williamstown, Wisconsin
- Williamstown Township, Michigan
This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.