Thomaston is the name of several places in the United States of America:
- Thomaston, Alabama
- Thomaston, Connecticut
- Thomaston, Georgia
- Thomaston, Indiana
- Thomaston, Maine, a town
- Thomaston (CDP), Maine, census-designated place within the town
- Thomaston, New York
- Thomaston, Texas
- South Thomaston, Maine