Amerikas Forenede Stater
- Watertown, en by i Litchfield County, Connecticut
- Watertown, amtssædet for Codington County, South Dakota
- Watertown, en by i Middlesex County, Massachusetts
- Watertown, en by i Carver County, Minnesota
- Watertown, amtssæde i Jefferson County, New York
- Watertown, en by i Wilson County, Tennessee
- Watertownby beliggende mellem Dodge County og Jefferson County, Wisconsin