Plymouth Harbor
General data
- Name: Plymouth Harbor
- Water system: Atlantic Ocean
- Water type: Estuary
- Progression: Plymouth Bay -> Cape Cod Bay -> Gulf of Maine -> Atlantic Ocean -> Planet Earth
- Climates: Continental
- Continents: North America
- Countries: United States of America
Plymouth Harbor is a harbor located in Plymouth, a town in the South Shore region of the U.S. state of Massachusetts. It is part of the larger Plymouth Bay. Historically, Plymouth Harbor was the site of anchorage of the Mayflower where the Plymouth Colony pilgrims disembarked in 1620 to establish a permanent settlement at Plymouth.