Plymouth is the name of various cities:
- Plymouth, England - the original city, nomenclature derived from the mouth of the River Plym in Devon.
- Plymouth, Connecticut, United States of America
- Plymouth, Illinois, United States of America
- Plymouth, Indiana, United States of America
- Plymouth, Massachusetts, United States of America
- Plymouth, Michigan, United States of America
- Plymouth, Minnesota, United States of America
- Plymouth, New Hampshire, United States of America
- Plymouth, North Carolina, United States of America
- Plymouth, Ohio, United States of America
- Plymouth, Pennsylvania, United States of America
- Plymouth, Wisconsin, United States of America
- Plymouth Township, Pennsylvania, United States of America
- Plymouth, Montserrat - Caribbean.
- New Plymouth, New Zealand
- New Plymouth, Idaho, United States of America
- Plymouth Meeting, Pennsylvania, United States of America
Other meanings of the word Plymouth are:
- An American automobile brand, see Plymouth automobile
- The religious movement of the Plymouth Brethren
- Plymouth Colony
- Plymouth County
- Plymouth gin
- Plymouth Locomotive Works - a builder of small industrial railroad locomotives founded in Plymouth, Ohio.